CN107474366A - A kind of preparation method of medical-dental pad basement membrane - Google Patents
A kind of preparation method of medical-dental pad basement membrane Download PDFInfo
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- CN107474366A CN107474366A CN201710790064.XA CN201710790064A CN107474366A CN 107474366 A CN107474366 A CN 107474366A CN 201710790064 A CN201710790064 A CN 201710790064A CN 107474366 A CN107474366 A CN 107474366A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/06—Polyethene
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
- B29C41/34—Component parts, details or accessories; Auxiliary operations
- B29C41/46—Heating or cooling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
- B29C41/34—Component parts, details or accessories; Auxiliary operations
- B29C41/52—Measuring, controlling or regulating
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2007/00—Flat articles, e.g. films or sheets
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/04—Homopolymers or copolymers of ethene
- C08J2323/06—Polyethene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/04—Homopolymers or copolymers of ethene
- C08J2423/06—Polyethene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/02—Applications for biomedical use
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/16—Applications used for films
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
- Paper (AREA)
Abstract
The present invention provides a kind of preparation method of medical-dental pad basement membrane, and each component and its percentage composition in dentistry pad basement membrane are：PE particles 7,042 40%~50%；PE particles 1C7A 15%~25%；PE particles 2020H 6%~14%；PE particles 8,008 15%~25%；Additive 265 4%~7%；Additive 78CB 2%~5%；The preparation method of dentistry pad basement membrane includes step：A) the purchasing of raw materials；B) check and accepting storing；C dispensing) is got；D) it is stirred；E) film shaping；F) splitting winding；G packaging) is checked and accepted；H outbound) is put in storage；The basement membrane reduces technology difficulty with toilet paper compound tense, it is not necessary to using glue, is not in delamination in follow-up use, improves final product quality.
Description
The present invention be submit on March 20th, 2017, entitled " medical-dental pad basement membrane and preparation method thereof ", Shen
Please number for 2017101638210 application for a patent for invention divisional application.
Technical field
The invention belongs to medical composite material technical field, is related to a kind of medical-dental pad basement membrane and preparation method thereof.
Background technology
At present, due to the continuous improvement of living standard, protection and preventing and treating of the people to tooth are increasingly focused on, dentistry diagnosis and treatment
Frequency increase, need to use dental chair in dentistry diagnosis and treatment, for prevent various diseases between patient constantly produce and
Propagate, for improve dentistry diagnosis and treatment when wholesomeness and security, dentistry pad be gradually used widely.
Need to use glue to be bonded toilet paper on the two sides of basement membrane when dentistry pad finally uses, be easily damaged and defended using glue
Raw paper, in process of production, equipment and technique are unstable for conventional products, frequently result in adhesive failure, go out in follow-up use
Existing delamination, influences to use.
In addition, dentistry pad basement membrane is molded using cast film machine more, cast film machine is to be cast melt suddenly by casting device
Cold film forming, wherein chill roll are most important film-forming components.Traditional chill roll is mostly to use single-row spiral cooling-water duct,
When cooling down film forming, cooling water flows to the other end by one end of chill roll, to maintain the relatively low roll surface temperature of chill roll.It is this cold
But roller can only produce narrow casting films, and reason is that the chill roll length of narrow casting films is shorter, and the temperature difference at roll surface both ends is little, no
Influence whether the quality of casting films quenching film forming.And for wide cut casting films, then need the longer chill roll of length, then roll surface
The temperature difference at both ends can increase with length, so as to have influence on the quality of casting films quenching film forming, thus manufactured product
The quality requirement of dentistry pad can not be met.This is those skilled in the art's urgent problem to be solved.
The content of the invention
The purpose of the present invention is above mentioned problem be present for existing technology, it is proposed that a kind of medical-dental pads basement membrane, solution
Dentistry of having determined pad product the problem of adhesive failure causes delamination in use.
The purpose of the present invention can be realized by following technical proposal：
Medical-dental pads basement membrane, and each component and its percentage composition in the basement membrane are：
In above-mentioned medical-dental pad basement membrane, the membrane surface has concave convex texture.
It is another object of the present invention to above mentioned problem be present for existing technology, it is proposed that a kind of medical-dental pads basement membrane
Preparation method, solving the problems, such as that technique is unstable causes quality of forming film difference, obtained basement membrane stable performance.
The purpose of the present invention can be realized by following technical proposal：
Medical-dental pads the preparation method of basement membrane, comprises the following steps：
A) the purchasing of raw materials：Purchase PE particles 7042, PE particle 1C7A, PE particle 2020H, PE particle 8008, additive
265th, the raw material such as additive 78CB；
B) check and accepting storing：By step A) in the raw material check and accepting storing purchased；
C dispensing) is got：Claimed proportionally to weigh various raw materials, PE particles 7042 with 500 kilograms every barrel with high-precision electronic
Accounting 40%~50%；PE particle 1C7A accountings 15%~25%；PE particle 2020H accountings 6%~14%；PE particles 8008
Accounting 15%~25%；The accounting 4%~7% of additive 265；Additive 78CB accountings 2%~5%；
D) it is stirred：By step C) in the raw material that is weighed be added in vertical heating stirring machine and be stirred, every 500
Kilogram mixing time is more than 50 minutes, and temperature control can only once stir 500 kilograms positive and negative 10 kilograms at 50 ± 5 DEG C；
E) film shaping：Material after stirring is added to extrude in the flared crossing casting machine of single screw rod basement membrane, equipment is made
Barrel heating is provided with 7 regions, and the temperature in first region is 195 ± 5 DEG C, and second regional temperature is 220 ± 5 DEG C, and the 3rd
Individual regional temperature is 235 ± 3 DEG C, and the 4th to SECTOR-SEVEN domain temperature is 250 ± 3 DEG C；Screen pack net-changing device temperature is 240 ± 5
DEG C, the temperature in remaining each portion adjusts between 245 DEG C to 250 DEG C；Film forming film tool temperature control is provided with 13 regions, both sides
Regional temperature be arranged to 250 ± 5 DEG C, middle 11 regions are all 250 ± 3 DEG C, and corona treatment electric current is 2.3；
F) splitting winding；
G packaging) is checked and accepted；
H outbound) is put in storage.
In the preparation method of above-mentioned medical-dental pad basement membrane, the flared crossing casting machine of single screw rod has flared crossing cooling
Roller, flared crossing chill roll include roll body, swivel joint one and swivel joint two, and swivel joint one is arranged on the left end of roll body, rotation
Adapter two is arranged on the right-hand member of roll body, and swivel joint one has feed liquor runner one and goes out liquid stream road one, and feed liquor runner one connects
Feed tube one, go out liquid stream road one and connect drain pipe one, swivel joint two has feed liquor runner two and goes out liquid stream road two, feed liquor runner
Two connection feed tubes two, go out liquid stream road two and connect drain pipe two；Roll body include interior roll body, middle roll body, outer roll body, left end cap and
Right end cap, middle roll body are set on interior roll body, and outer roll body is set on middle roll body, and the left end of interior roll body wears left end cap,
Left end cap is sealed on the left end of middle roll body and the left end of outer roll body, and swivel joint one is connected with left end cap, and swivel joint is a set of
And if it is sealed on the left end of interior roll body；The right-hand member of interior roll body wears right end cap, and right end cap is sealed on the right-hand member of middle roll body and outer
The right-hand member of roll body, swivel joint two are connected with right end cap, and swivel joint two is arranged and is sealed on the right-hand member of interior roll body；Middle roll body
Back-up ring is convexly equipped with, back-up ring is integrally formed the outer wall middle-end in middle roll body, and back-up ring is pressed on the inwall middle-end of outer roll body；Outer roll body
Cooling duct one is formed between middle roll body and cooling duct two, left end cap and right end cap offer end cap runner, left end
The end cap flow passage cooling duct one of lid and go out liquid stream road one, the end cap flow passage cooling duct two of right end cap and go out liquid stream
Road two；Interior roll body is divided into left side roll body and right side roll body, left side roll body and right roller body by integral forming and is in symmetrical structure；It is left
The inside of side roller body has feed pathway one, and the inside of right side roll body has feed pathway two, the feed liquor runner of swivel joint one
One communicates with the feed pathway one of left side roll body；The feed liquor runner two of swivel joint two and the feed pathway two-phase of right side roll body
It is logical；Spiral channel one and spiral channel two, spiral channel one and spiral channel two-phase are formed between left side roll body and middle roll body
Mutually staggeredly, feed pathway one extends internally from the left end of left side roll body and is connected with the inner of spiral channel one, spiral channel
One outer end is connected with the outer end of spiral channel two by link slot one, and middle roll body offers one and irises out water hole one, apopore
One is adjacent to back-up ring, and the inner of spiral channel two is communicated with cooling duct one by apopore one；Right side roll body and middle roll body
Between form spiral channel three and spiral channel four, spiral channel three and spiral channel four are interlaced, and feed pathway two is from the right side
The right-hand member of side roller body extends internally and is connected with the inner of spiral channel three, outer end and the spiral channel four of spiral channel three
Outer end is connected by link slot two, and middle roll body offers one and irises out water hole two, and apopore two is adjacent to back-up ring, spiral channel four
The inner communicated with cooling duct two by apopore two；The back-up ring both sides of middle roll body are welded with the drainage of multigroup equi-spaced apart
Piece group, every group of drainage piece group are made up of multiple drainage pieces, and the drainage piece of every group of drainage piece group, which is radially spaced, is welded on centre
On the outer wall of roll body, and the position of the drainage piece of two adjacent groups drainage piece group is mutually staggered.
In the preparation method of above-mentioned medical-dental pad basement membrane, the both ends of outer roll body are respectively embedded with one and thicken set, add
Thickness set is between the end of outer roll body and the end of middle roll body, and the outer wall for thickening set is resisted against on the inwall of outer roll body, is added
The wall thickness of thickness set is gradually incremented by from inside to outside.
In the preparation method of above-mentioned medical-dental pad basement membrane, the inwall of outer roll body is pasted with heat-conducting metal layer one, in
Between the inwall of roll body be pasted with heat-conducting metal layer two.
Compared with prior art, the present invention has the advantage that：
1st, caused adhesive effect reaches the compound fastness of toilet paper just after two kinds of additive high temperature in basement membrane of the invention,
So as to solve the problems, such as finished product easy delamination in use, the composite quality of finished product is not only increased, and reduce
The combination process difficulty of finished product；
2nd, the flared crossing chill roll of casting machine is designed as the two-way feed liquor drainage structure of symmetrical expression, using from the two of roll body
Hold it is two-way enter cooling water and then bidirectionally to discharge cooling water, the liquid feeding end and outlet end of cooling water are same one end of roll body,
Same one end of roll body feed liquor and goes out liquid simultaneously, reduces the roll body both ends temperature difference, realizes that film uniformly cools down, advantageously accounts for cooling down
The problem of cooling effectiveness is low when roller length is long, inhomogeneous cooling is even, be advantageous to improve the quality of production of basement membrane, suitable for output
The dentistry pad basement membrane of wider door width.
Brief description of the drawings
Fig. 1 is the flow chart of the preparation method of the medical-dental pad basement membrane of the present invention.
Fig. 2 is the structural representation of the flared crossing chill roll of the present invention.
Fig. 3 is the side view of the middle roll body of the flared crossing chill roll of the present invention.
Fig. 4 is the partial enlarged drawing in the A portions in Fig. 2.
Fig. 5 is the partial enlarged drawing in the B portions in Fig. 2.
In figure, 1, swivel joint one；2nd, swivel joint two；3rd, feed liquor runner one；4th, liquid stream road one is gone out；5th, feed tube one；
6th, drain pipe one；7th, feed liquor runner two；8th, liquid stream road two is gone out；9th, feed tube two；10th, drain pipe two；11st, interior roll body；12nd, it is middle
Roll body；13rd, outer roll body；14th, left end cap；15th, right end cap；16th, back-up ring；17th, cooling duct one；18th, cooling duct two；19th, hold
Lid runner；20th, left side roll body；21st, right side roll body；22nd, feed pathway one；23rd, feed pathway two；24th, spiral channel one；25、
Spiral channel two；26th, link slot one；27th, apopore one；28th, spiral channel three；29th, spiral channel four；30th, link slot two；
31st, apopore two；32nd, drainage piece group；33rd, drainage piece；34th, set is thickeied；35th, heat-conducting metal layer one；36th, heat-conducting metal layer two；
37th, end cap groove；38th, stage portion；39th, drainage strip one；40th, drainage strip two；41st, drainage strip three；42nd, drainage strip four.
Embodiment
It is the specific embodiment of the present invention and with reference to accompanying drawing below, technical scheme is further described,
But the present invention is not limited to these embodiments.
Embodiment one
Medical-dental pads basement membrane, and each component and its percentage composition in the basement membrane are：
The membrane surface forms concave convex texture by knurling rolls, so as to which membrane surface has atomized surface effect.
Embodiment two
Medical-dental pads basement membrane, and each component and its percentage composition in the basement membrane are：
The membrane surface forms concave convex texture by knurling rolls, so as to which membrane surface has atomized surface effect.
Embodiment three
Medical-dental pads basement membrane, and each component and its percentage composition in the basement membrane are：
The membrane surface forms concave convex texture by knurling rolls, so as to which membrane surface has atomized surface effect.
Need to use glue to be bonded toilet paper on the two sides of basement membrane when dentistry pad finally uses, be easily damaged and defended using glue
Raw paper, therefore we with the addition of heat adhesive in basement membrane, allows finished product factory to remove glue compounding machine, is directly synthesized using hot pressing
Type machine, settle production at one go, it is quick and convenient.Caused adhesive effect is just enough after two kinds of additive high temperature in the basement membrane of the present invention
The compound fastness of toilet paper, so as to solve the problems, such as finished product easy delamination in use, not only increase answering for finished product
Quality is closed, and reduces the combination process difficulty of finished product.
The main physical parameter of dentistry pad basement membrane is grammes per square metre, tensile strength, elongation at break, water pressure resistance.Grammes per square metre test makes
Equipment is the specific gravity balance of the high Inland Steel of TaiWan, China, and the equipment that tensile strength and elongation at break use is TaiWan, China
The servo tensile testing machine of high Inland Steel, and water pressure resistance test is then the new water-fast pressure tester of full Switzerland's import.
The physical index of the dentistry pad basement membrane of the present invention is detected, is as a result shown in table one：
Table one
As shown in Figures 1 to 5, present invention also offers a kind of preparation method of medical-dental pad basement membrane, including following step
Suddenly：
A) the purchasing of raw materials：Purchase PE particles 7042, PE particle 1C7A, PE particle 2020H, PE particle 8008, additive
265th, the raw material such as additive 78CB；
B) check and accepting storing：By step A) in the raw material check and accepting storing purchased；
C dispensing) is got：Claimed proportionally to weigh various raw materials, PE particles 7042 with 500 kilograms every barrel with high-precision electronic
Accounting 40%~50%；PE particle 1C7A accountings 15%~25%；PE particle 2020H accountings 6%~14%；PE particles 8008
Accounting 15%~25%；The accounting 4%~7% of additive 265；Additive 78CB accountings 2%~5%；Component proportion is more than 20%
Raw material control within positive and negative 100 grams, component ratio less than 20% raw material control within positive and negative 20 grams；
D) it is stirred：By step C) in the raw material that is weighed be added in vertical heating stirring machine and be stirred, every 500
Kilogram mixing time is more than 50 minutes, and temperature control can only once stir 500 kilograms positive and negative 10 kilograms at 50 ± 5 DEG C；
E) film shaping：Material after stirring is added to extrude in the flared crossing casting machine of single screw rod basement membrane, equipment is made
Extrusion capacity be up to 300KG per hour, the production using extrusion capacity be 100KG per hour；The flared crossing curtain coating of single screw rod
Machine has a concavo-convex microgroove steel rider and a plane rubber stick, so that basement membrane has atomized surface effect；The heating of equipment barrel is set
There are 7 regions, the temperature in first region is 195 ± 5 DEG C, and second regional temperature is 220 ± 5 DEG C, the 3rd regional temperature
For 235 ± 3 DEG C, the 4th to SECTOR-SEVEN domain temperature is 250 ± 3 DEG C；Screen pack net-changing device temperature is 240 ± 5 DEG C, remaining each portion
Temperature adjusts between 245 DEG C to 250 DEG C；Film forming film tool temperature control is provided with 13 regions, and film tool is rectangle, side
Face is trapezoidal, and the regional temperature on both sides is arranged to 250 ± 5 DEG C, and middle 11 regions are all 250 ± 3 DEG C, and sided corona treatment is electromechanical
Flow for 2.3；
F) splitting winding；
G packaging) is checked and accepted；
H outbound) is put in storage.
It is noted that the flared crossing casting machine of single screw rod has a flared crossing chill roll, flared crossing chill roll include roll body,
Swivel joint 1 and swivel joint 22, swivel joint 1 are arranged on the left end of roll body, and swivel joint 22 is arranged on roll body
Right-hand member, when being cooled down to film, roll body is in rotary state, and roll body rotates against joint 1 and swivel joint 22 axially turns
It is dynamic.Swivel joint 1 has feed liquor runner 1 and goes out liquid stream road 1, and feed liquor runner 1 connects feed tube 1, goes out liquid stream road
One 4 connection drain pipes 1, swivel joint 22 have feed liquor runner 27 and go out liquid stream road 28, and feed liquor runner 27 connects feed liquor
Pipe 29, go out liquid stream road 28 and connect drain pipe 2 10；The chill roll using from the both ends of roll body it is two-way enter cooling water then
Bidirectionally cooling water is discharged, the liquid feeding end and outlet end of cooling water are same one end of roll body, are entered simultaneously in same one end of roll body
Liquid and go out liquid, reduce the roll body both ends temperature difference, realize that film uniformly cools down, be advantageous to improve the quality of production of film.
Specifically, roll body includes interior roll body 11, middle roll body 12, outer roll body 13, left end cap 14 and right end cap 15, intermediate calender rolls
Body 12 is set on interior roll body 11, and outer roll body 13 is set on middle roll body 12 and has space between middle roll body 12.
Left end cap 14 is identical with the structure of right end cap 15, the center of left end cap 14 and the center of right end cap 15 offer and
The axis hole that interior roll body 11 matches, the left end of interior roll body 11 wear left end cap 14, and left end cap 14 is sealed on a left side for middle roll body 12
End and the left end of outer roll body 13, left end cap 14 are fixed with outer roll body 13 by screw lock.Swivel joint 1 and left end cap 14
Flange is connected, and swivel joint 1 is set in the left end of interior roll body 11 and covers its left end.The right-hand member of interior roll body 11 wears the right side
End cap 15, right end cap 15 are sealed on the right-hand member of middle roll body 12 and the right-hand member of outer roll body 13, and right end cap 15 passes through with outer roll body 13
Screw lock is fixed, and swivel joint 22 is connected with the flange of right end cap 15, and swivel joint 22 is set in the right-hand member of interior roll body 11 simultaneously
Its right-hand member is covered.Selectively, left end cap 14 and right end cap 15 offer the end cap groove 37 to cave inward, middle roll body
12 left end is caught in the end cap groove 37 of left end cap 14, and the right-hand member of middle roll body 12 is caught in the end cap groove 37 of right end cap 15, from
And left end cap 14 and right end cap 15 are improved to middle 12 stronger capping of roll body.
Further, middle roll body 12 is convexly equipped with back-up ring 16, and back-up ring 16 is integrally formed the outer wall middle-end in middle roll body 12,
Back-up ring 16 is pressed on the inwall middle-end of outer roll body 13；Selectively, the inwall middle-end of outer roll body 13 offers and the size of back-up ring 16
The neck of outer roll body 13 to match, back-up ring 16 are snapped onto in the outer neck of roll body 13, to strengthen middle roll body 12 and outer roll body 13
Attachment force.It is noted that due to the setting of back-up ring 16, cooling duct 1 is formed between outer roll body 13 and middle roll body 12
With cooling duct 2 18, cooling duct 1 and cooling duct 2 18 are separated by back-up ring 16, and cooling duct 1 forms and kept off
The left side of circle 16, cooling duct 2 18 are formed on the right side of back-up ring 16；Cooling duct 1 and cooling duct 2 18 are not communicated with, cold
But effect is not interfere with each other.Left end cap 14 and right end cap 15 offer end cap runner 19, and the end cap runner 19 of left end cap 14 connects
Cooling duct 1 connects cooling duct 2 18 and goes out liquid stream road 28 with liquid stream road 1, the end cap runner 19 of right end cap 15 is gone out,
To realize two-way independent cooling.In addition, cooling duct 1 is equal with the volume of cooling duct 2 18, to realize equivalent cooling
Effect.
Interior roll body 11 divides for left side roll body 20 and right side roll body 21, left side roll body 20 and right side roll body 21 be integrally formed and
In symmetrical structure, wherein left side roll body 20 is corresponding with cooling duct 1, right side roll body 21 is corresponding with cooling duct 2 18.
Specifically, the inside of left side roll body 20 has feed pathway 1, and the inside of right side roll body 21 has feed pathway 2 23, feed liquor
Passage 1 does not connect with feed pathway 2 23.The entrance of feed pathway 1 stretches to the feed liquor runner 1 of swivel joint 1
It is interior, communicated so as to the feed liquor runner 1 of swivel joint 1 with the feed pathway 1 of left side roll body 20；Feed pathway 2 23
Entrance is stretched in the feed liquor runner 27 of swivel joint 22, so as to feed liquor runner 27 and the right side roll body 21 of swivel joint 22
Feed pathway 2 23 communicate；The both ends of interior roll body 11 while feed liquor, realize the two-way feed liquor of chill roll.
Spiral channel 1 and spiral channel 2 25, spiral channel 1 are formed between left side roll body 20 and middle roll body 12
It is interlaced with spiral channel 2 25, feed pathway 1 extended internally from the left end of left side roll body 20 and with spiral channel one
24 the inner is connected, and the outer end of spiral channel 1 is connected with the outer end of spiral channel 2 25 by link slot 1, middle
Roll body 12 offers one and irises out water hole 1, and apopore 1 is adjacent to back-up ring 16, and the inner of spiral channel 2 25 and cooling are logical
Road 1 is communicated by apopore 1.Spiral channel 3 28 and spiral water are formed between right side roll body 21 and middle roll body 12
Road 4 29, spiral channel 3 28 and spiral channel 4 29 are interlaced, and feed pathway 2 23 is inside from the right-hand member of right side roll body 21
Extend and be connected with the inner of spiral channel 3 28, the outer end of spiral channel 3 28 passes through company with the outer end of spiral channel 4 29
Access slot 2 30 connects, and middle roll body 12 offers one and irises out water hole 2 31, and apopore 2 31 is adjacent to back-up ring 16, spiral channel
4 29 the inner is communicated with cooling duct 2 18 by apopore 2 31.
Feed tube 1 and feed tube 29 are opened simultaneously after, feed liquor that the cooling water of feed tube 1 passes through swivel joint 1
Runner 1 enters the feed pathway 1 of interior roll body 11 from left end, and inwardly spiral channel 1 is flow to along feed pathway 1,
Flow through the surface of left side roll body 20 from inside to outside then along spiral channel 1, after being crossed with spiral channel 2 25, cooling
Water enters spiral channel 2 25, and flows through the surface of left side roll body 20 again from outside to inside along spiral channel 2 25, and
Enter in cooling duct 1 from apopore 1, flowed to the left along cooling duct 1 from the centre of outer roll body 13, passed through
The end cap runner 19 and swivel joint 1 for crossing left end cap 14 go out liquid stream road 1, discharge from drain pipe 1, are responsible for pair
The left side of outer roll body 13 is cooled down, and the left side heat of film is taken away.
The cooling water of feed tube 29 enters the feed liquor of interior roll body 11 by the feed liquor runner 27 of swivel joint 22 from right-hand member
Passage 2 23, spiral channel 3 28 inwardly is flow to along feed pathway 2 23, then along spiral channel 3 28 from inside to outside
The surface of right side roll body 21 is flowed through, after being crossed with spiral channel 4 29, cooling water enters spiral channel 4 29, and along spiral
Water channel 4 29 flows through the surface of right side roll body 21 again from outside to inside, and enters cooling duct 2 18 from apopore 2 31
It is interior, flowed to the right along cooling duct 2 18 from the centre of outer roll body 13, end cap runner 19 and rotation by right end cap 15
Joint 22 goes out liquid stream road 28, is discharged from drain pipe 2 10, and the right side for being responsible for external roll body 13 is cooled down, will be thin
The right side heat of film is taken away.Chill roll is along middle-end bilateral symmetry, therefore the left side of outer roll body 13 and right side is cold
It is identical.
The inwall of outer roll body 13 is pasted with heat-conducting metal layer 1, and the inwall of middle roll body 12 is pasted with heat-conducting metal layer two
36.It is noted that when chill roll cools down to film, film is attached to the surface of outer roll body 13, and chill roll is set
Be calculated as the two-way feed liquor drainage structure of symmetrical expression, advantageously account for chill roll length it is long when cooling effectiveness is low, inhomogeneous cooling is even
The problem of, the length of chill roll of the invention can be longer than common chill roll length, be produced suitable for the film of the wider door width of output
Product.Cooling water is before flowing into cooling duct 1, the external roll body 13 in cooling duct 2 18 is cooled down, first in middle roll body 12
Spiral reciprocal flowing is carried out between interior roll body 11, adds flowing time of the cooling water inside roll body, cooling water is in spiral shell
It is to play to middle roll body 12 when revolving flowing in water channel 1, spiral channel 2 25, spiral channel 3 28 and spiral channel 4 29
Cooling effect, cold temperature can be transferred to cooling duct 1 and cooling duct 2 18 in advance by middle roll body 12, make cooling
Before cooling water is not passed through, internal temperature first can reduce, that is, work as cooling water for passage 1 and cooling duct 2 18
Also between middle roll body 12 and interior roll body 11 during helical flow, cooling water be also can externally roll body 13 play it is indirect cold
But act on, not only increase the activity ratio of cooling water, and avoid cooling water from entering cooling duct 1 and cooling duct two
Outer roll body 13 is quenched suddenly after 18, and the temperature difference is too big before and after avoiding outer roll body 13, is advantageous to film be presented uniform cooling.
Preferably, spiral channel 1 and spiral channel 2 25 are the recessed helicla flutes on left side roll body 20；Spiral
Water channel 3 28 and spiral channel 4 29 are the recessed helicla flutes on right side roll body 21.
Selectively, the outer wall middle-end of interior roll body 11 has the stage portion 38 of protrusion, left side roll body 20 and right side roll body 21
Separated by the phase of stage portion 38, stage portion 38 is resisted against the inwall middle-end of middle roll body 12；Spirally winding on left side roll body 20
There are the drainage strip 1 and drainage strip 2 40 of protrusion, drainage strip 1 is identical with the width of drainage strip 2 40.The He of drainage strip 1
Drainage strip 2 40 is welded on the outer wall of left side roll body 20, and drainage strip 1 and drainage strip 2 40 are resisted against middle roll body 12
On inwall, and define spiral channel 1 and spiral channel 2 25.
Spirally it is arranged with the drainage strip 3 41 and drainage strip 4 42 of protrusion on right side roll body 21, drainage strip 3 41 and draws
The width for flowing bar 4 42 is identical.Drainage strip 3 41 and drainage strip 4 42 are welded on the outer wall of right side roll body 21, drainage strip three
41 and drainage strip 4 42 be resisted against on the inwall of middle roll body 12, and define spiral channel 3 28 and spiral channel 4 29.
Selectively, the both sides of back-up ring 16 of middle roll body 12 are welded with the drainage piece group 32 of multigroup equi-spaced apart, and every group is drawn
Flow group 32 is made up of multiple drainage pieces 33, and the drainage piece 33 of every group of drainage piece group 32, which is radially spaced, is welded on middle roll body
On 12 outer wall, and the position of the drainage piece 33 of two adjacent groups drainage piece group 32 is mutually staggered；Cooling water cooling duct 1 again
During with being flowed in cooling duct 2 18, drainage piece 33 plays agitaion to cooling water, overcomes laminar flow phenomenon.
In addition, the both ends of outer roll body 13, which are respectively embedded with one, thickeies set 34, the outside dimension of set 34 and outer roll body 13 are thickeied
The internal diameter size at both ends matches, and thickeies set 34 and is between the end of outer roll body 13 and the end of middle roll body 12, thickeies set
34 outer wall is resisted against on the inwall of outer roll body 13, and the thickening set 34 of the left end of outer roll body 13 passes through fastener with left end cap 14
It is locked, the thickening set 34 of the outer right-hand member of roll body 13 is locked with right end cap 15 by fastener；Thicken set 34 wall thickness from
Gradually it is incremented by from inside to outside.The both ends of outer roll body 13 are in non-active area, and the setting for thickening set 34 adds the two of outer roll body 13
Thickness is held, hinders the cooling at the external both ends of roll body 13 of cooling water, avoids the both ends of outer roll body 13 from producing dew condensation phenomenon, is advantageous to solve
The influence certainly to condense to film quality.
Specific embodiment described herein is only to spirit explanation for example of the invention.Technology belonging to the present invention is led
The technical staff in domain can be made various modifications or supplement to described specific embodiment or be replaced using similar mode
Generation, but without departing from the spiritual of the present invention or surmount scope defined in appended claims.
Although swivel joint 1 has more been used herein；Swivel joint 22；Feed liquor runner 1；Go out liquid stream road 1；
Feed tube 1；Drain pipe 1；Feed liquor runner 27；Go out liquid stream road 28；Feed tube 29；Drain pipe 2 10；Interior roll body 11；In
Between roll body 12；Outer roll body 13；Left end cap 14；Right end cap 15；Back-up ring 16；Cooling duct 1；Cooling duct 2 18；End cap stream
Road 19；Left side roll body 20；Right side roll body 21；Feed pathway 1；Feed pathway 2 23；Spiral channel 1；Spiral channel two
25；Link slot 1；Apopore 1；Spiral channel 3 28；Spiral channel 4 29；Link slot 2 30；Apopore 2 31；Drainage
Piece group 32；Drainage piece 33；Thicken set 34；Heat-conducting metal layer 1；Heat-conducting metal layer 2 36；End cap groove 37；Stage portion 38；Drainage
Bar 1；Drainage strip 2 40；Drainage strip 3 41；The grade term of drainage strip 4 42, but it is not precluded from the possibility using other terms.
It is used for the purpose of more easily describing and explaining the essence of the present invention using these terms；It is construed as any additional
Limitation all disagreed with spirit of the present invention.
Claims (9)
- A kind of 1. preparation method of medical-dental pad basement membrane, for preparing medical-dental pad basement membrane, it is characterised in that medical-dental Each component and its percentage composition in pad basement membrane are：PE particles 7,042 40%~50%；PE particles 1C7A 15%~25%； PE particles 2020H 6%~14%；PE particles 8,008 15%~25%；Additive 2654%~7%；Additive 78CB 2% ~5%；The preparation method comprises the following steps：A) the purchasing of raw materials：Buying PE particles 7042, PE particle 1C7A, PE particle 2020H, PE particle 8008, additive 265, add Add the raw materials such as agent 78CB；B) check and accepting storing：By step A) in the raw material check and accepting storing purchased；C dispensing) is got：Claimed proportionally to weigh various raw materials, the accounting of PE particles 7042 with 500 kilograms every barrel with high-precision electronic 40%~50%；PE particle 1C7A accountings 15%~25%；PE particle 2020H accountings 6%~14%；The accounting of PE particles 8008 15%~25%；The accounting 4%~7% of additive 265；Additive 78CB accountings 2%~5%；D) it is stirred：By step C) in the raw material that is weighed be added in vertical heating stirring machine and be stirred, every 500 kilograms Mixing time is more than 50 minutes, and temperature control can only once stir 500 kilograms positive and negative 10 kilograms at 50 ± 5 DEG C；E) film shaping：Material after stirring is added to extrude in the flared crossing casting machine of single screw rod basement membrane is made；Equipment barrel Heating is provided with 7 regions, and the temperature in first region is 195 ± 5 DEG C, and second regional temperature is 220 ± 5 DEG C, the 3rd area Domain temperature is 235 ± 3 DEG C, and the 4th to SECTOR-SEVEN domain temperature is 250 ± 3 DEG C；Screen pack net-changing device temperature is 240 ± 5 DEG C, remaining The temperature in each portion adjusts between 245 DEG C to 250 DEG C；Film forming film tool temperature control is provided with 13 regions, the region on both sides Temperature setting is 250 ± 5 DEG C, and middle 11 regions are all 250 ± 3 DEG C, and corona treatment electric current is 2.3；Single screw rod is flared crossing Casting machine has flared crossing chill roll, the flared crossing chill roll from the both ends of roll body it is two-way enter cooling water then bidirectionally will cooling Water is discharged, and the liquid feeding end and outlet end of cooling water are same one end of roll body, in same one end of roll body while feed liquor and goes out liquid；F) splitting winding；G packaging) is checked and accepted；H outbound) is put in storage.
- 2. the preparation method of medical-dental pad basement membrane according to claim 1, it is characterised in that flared crossing chill roll includes Roll body, swivel joint one and swivel joint two, swivel joint one are arranged on the left end of roll body, and swivel joint two is arranged on roll body Right-hand member, swivel joint one have feed liquor runner one and go out liquid stream road one, and feed liquor runner one connects feed tube one, goes out liquid stream road one and connects Liquid pipe one is picked out, swivel joint two has feed liquor runner two and goes out liquid stream road two, and feed liquor runner two connects feed tube two, goes out liquid stream Road two connects drain pipe two；Roll body includes interior roll body, middle roll body, outer roll body, left end cap and right end cap, and middle roll body is set in On interior roll body, outer roll body is set on middle roll body, and the left end of interior roll body wears left end cap, and left end cap is sealed on middle roll body The left end of left end and outer roll body, swivel joint one are connected with left end cap, and swivel joint one is arranged and is sealed on the left end of interior roll body； The right-hand member of interior roll body wears right end cap, and right end cap is sealed on the right-hand member of middle roll body and the right-hand member of outer roll body, swivel joint two with Right end cap is connected, and swivel joint two is arranged and is sealed on the right-hand member of interior roll body；The outer wall middle-end of middle roll body is convexly equipped with back-up ring, gear Circle is pressed on the inwall middle-end of outer roll body；Formed between outer roll body and middle roll body the cooling duct one that is separated by back-up ring and Cooling duct two, left end cap and right end cap offer end cap runner, the end cap flow passage cooling duct one of left end cap and go out Liquid stream road one, the end cap flow passage cooling duct two of right end cap and goes out liquid stream road two；The inside of interior roll body has disconnected Feed pathway one and feed pathway two, feed pathway one extend internally from left end, and feed pathway two extends internally from right-hand member, feed liquor The outer end of passage one communicates with feed liquor runner one, and the inner of feed pathway communicates with cooling duct one；The outer end of feed pathway two Communicated with feed liquor runner two, the inner of feed pathway communicates with cooling duct two.
- 3. the preparation method of medical-dental pad basement membrane according to claim 2, it is characterised in that cooling duct one and cooling The volume of passage two is equal.
- 4. the preparation method of medical-dental pad basement membrane according to claim 2, it is characterised in that interior roll body is divided into left roller Body and right side roll body, the inside of left side roll body have feed pathway one, and the inside of right side roll body has feed pathway two, interior roll body Outer wall middle-end have protrusion stage portion, left side roll body is mutually separated with right side roll body by stage portion, during stage portion is resisted against Between roll body inwall middle-end；Left side roll body and right side roll body are in symmetrical structure.
- 5. the preparation method of medical-dental pad basement membrane according to claim 4, it is characterised in that on the roll body of left side spirally The drainage strip one and drainage strip two of protrusion are arranged with, drainage strip one and drainage strip two are resisted against on the inwall of middle roll body, and Spiral channel one and spiral channel two are defined, spiral channel one and spiral channel two are interlaced, and feed pathway one is from left side The left end of roll body extends internally and is connected with the inner of spiral channel one, and the outer end of spiral channel one is outer with spiral channel two End is connected by link slot one, and middle roll body offers one and irises out water hole one, and apopore one is adjacent to back-up ring, spiral channel two The inner is communicated with cooling duct one by apopore one.
- 6. the preparation method of medical-dental pad basement membrane according to claim 5, it is characterised in that drainage strip one and drainage strip Two width is identical.
- 7. the preparation method of medical-dental pad basement membrane according to claim 4, it is characterised in that on the roll body of right side spirally The drainage strip three and drainage strip four of protrusion are arranged with, drainage strip three and drainage strip four are resisted against on the inwall of middle roll body, and Define spiral channel three and spiral channel four；Spiral channel three and spiral channel are formed between right side roll body and middle roll body Four, spiral channel three and spiral channel four are interlaced, and feed pathway two is extended internally from the right-hand member of right side roll body and and spiral The inner of water channel three is connected, and the outer end of spiral channel three is connected with the outer end of spiral channel four by link slot two, intermediate calender rolls Body offers one and irises out water hole two, and apopore two is adjacent to back-up ring, and the inner and the cooling duct two of spiral channel four pass through water outlet Hole two communicates.
- 8. the preparation method of medical-dental pad basement membrane according to claim 7, it is characterised in that drainage strip three and drainage strip Four width is identical.
- 9. the preparation method of medical-dental pad basement membrane according to claim 2, it is characterised in that the inwall of outer roll body attaches There is heat-conducting metal layer one, the inwall of middle roll body is pasted with heat-conducting metal layer two.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710790064.XA CN107474366A (en) | 2017-03-20 | 2017-03-20 | A kind of preparation method of medical-dental pad basement membrane |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710163821.0A CN106928526B (en) | 2017-03-20 | 2017-03-20 | Medical-dental pads basement membrane and preparation method thereof |
| CN201710790064.XA CN107474366A (en) | 2017-03-20 | 2017-03-20 | A kind of preparation method of medical-dental pad basement membrane |
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| CN201710163821.0A Division CN106928526B (en) | 2017-03-20 | 2017-03-20 | Medical-dental pads basement membrane and preparation method thereof |
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| CN201710790064.XA Pending CN107474366A (en) | 2017-03-20 | 2017-03-20 | A kind of preparation method of medical-dental pad basement membrane |
| CN201710163821.0A Active CN106928526B (en) | 2017-03-20 | 2017-03-20 | Medical-dental pads basement membrane and preparation method thereof |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1541243A (en) * | 2001-12-12 | 2004-10-27 | 英默里斯矿物有限公司 | Breathable film |
| CN101643559A (en) * | 2009-09-15 | 2010-02-10 | 浙江越韩科技透气材料有限公司 | Ultrathin high porosity film and preparation method thereof |
| US20100137493A1 (en) * | 2008-12-03 | 2010-06-03 | Smart Planet Technologies, Inc. | High mineral content film for sealing |
| CN204820862U (en) * | 2015-07-16 | 2015-12-02 | 佛山运城压纹制版有限公司 | Compression roller of two spiral cooling structures |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI980528A (en) * | 1998-03-09 | 1999-09-10 | Bioxid Oy | New prepreg |
| JP2016516910A (en) * | 2013-03-14 | 2016-06-09 | イメリーズ ミネラルズ リミテッド | Composite structure |
| US20160303837A1 (en) * | 2013-12-20 | 2016-10-20 | E I Du Pont De Nemours And Company | Selectively permeable ethylene copolymer compositions |
-
2017
- 2017-03-20 CN CN201710790064.XA patent/CN107474366A/en active Pending
- 2017-03-20 CN CN201710163821.0A patent/CN106928526B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1541243A (en) * | 2001-12-12 | 2004-10-27 | 英默里斯矿物有限公司 | Breathable film |
| US20100137493A1 (en) * | 2008-12-03 | 2010-06-03 | Smart Planet Technologies, Inc. | High mineral content film for sealing |
| CN101643559A (en) * | 2009-09-15 | 2010-02-10 | 浙江越韩科技透气材料有限公司 | Ultrathin high porosity film and preparation method thereof |
| CN204820862U (en) * | 2015-07-16 | 2015-12-02 | 佛山运城压纹制版有限公司 | Compression roller of two spiral cooling structures |
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| CN106928526B (en) | 2019-08-13 |
| CN106928526A (en) | 2017-07-07 |
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Application publication date: 20171215 |