CN112810265A - Three-layer TPE composite lining film and preparation method and application thereof - Google Patents

Three-layer TPE composite lining film and preparation method and application thereof Download PDF

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Publication number
CN112810265A
CN112810265A CN202110005993.1A CN202110005993A CN112810265A CN 112810265 A CN112810265 A CN 112810265A CN 202110005993 A CN202110005993 A CN 202110005993A CN 112810265 A CN112810265 A CN 112810265A
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layer
tpe
temperature
film
mlldpe
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Inventor
杨棉
刘洪波
孙冠军
柴建民
曹会静
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Xinle Huabao Medical Products Co ltd
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Xinle Huabao Medical Products Co ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B25/00—Layered products comprising a layer of natural or synthetic rubber
    • B32B25/04—Layered products comprising a layer of natural or synthetic rubber comprising rubber as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B25/08—Layered products comprising a layer of natural or synthetic rubber comprising rubber as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F7/00—Heating or cooling appliances for medical or therapeutic treatment of the human body
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B32B27/327—Layered products comprising a layer of synthetic resin comprising polyolefins comprising polyolefins obtained by a metallocene or single-site catalyst
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
    • B32B37/15—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer being manufactured and immediately laminated before reaching its stable state, e.g. in which a layer is extruded and laminated while in semi-molten state
    • B32B37/153—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer being manufactured and immediately laminated before reaching its stable state, e.g. in which a layer is extruded and laminated while in semi-molten state at least one layer is extruded and immediately laminated while in semi-molten state
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F7/00—Heating or cooling appliances for medical or therapeutic treatment of the human body
    • A61F2007/0054—Heating or cooling appliances for medical or therapeutic treatment of the human body with a closed fluid circuit, e.g. hot water
    • A61F2007/0055—Heating or cooling appliances for medical or therapeutic treatment of the human body with a closed fluid circuit, e.g. hot water of gas, e.g. hot air or steam
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/40—Symmetrical or sandwich layers, e.g. ABA, ABCBA, ABCCBA
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/51—Elastic

Abstract

The invention relates to a three-layer TPE composite inner lining film which is composed of a TPE layer and mLLDPE layers compounded on two sides of the TPE layer, wherein the square meter gram weight of the TPE layer is 110g/m2Both said mLLDPE (metallocene polyethylene) layers having a grammage of5g/m2. The invention also relates to a preparation method of the three-layer TPE composite lining film and application of the three-layer TPE composite lining film as a lining of an inflatable heat-insulation blanket. The three-layer TPE composite inner lining film has the advantages of softness, excellent elasticity and strong puncture resistance.

Description

Three-layer TPE composite lining film and preparation method and application thereof
Technical Field
The invention relates to a three-layer TPE composite lining film and a preparation method and application thereof.
Background
Perioperative body temperature is inhibited by anesthetic agents, and the patient is exposed to a low temperature environment, resulting in a core body temperature below 36 ℃, i.e., hypothermia. Hypothermia has a great influence on the physiological functions of the human body, and serious patients can endanger life.
The inflatable heat-insulating blanket is specially designed for preventing the low body temperature in the perioperative period, and solves the problem of the low body temperature of a patient by filling constant-temperature gas into the heat-insulating blanket.
When in use, the inflatable heat-insulating blanket not only needs to raise the body temperature of a patient through constant-temperature gas, but also needs to protect and support the body of the patient, so that the material for manufacturing the inflatable heat-insulating blanket is soft, has higher composite strength and is puncture-resistant. The existing materials cannot fully meet the requirements.
Disclosure of Invention
The invention aims to provide a three-layer TPE composite inner lining film which is soft, excellent in elasticity and strong in puncture resistance, and a preparation method and application thereof.
The invention adopts the following technical scheme:
a three-layer TPE composite inner lining film is composed of a TPE layer and mLLDPE layers compounded on two sides of the TPE layer.
Wherein, the TPE (thermoplastic elastomer) layer is 2300-75L of Takazaki Kaisha.
Wherein the square meter gram weight of the TPE layer is 110g/m2Both of said mLLDPE (metallocene polyethylene) layers have a grammage of 5g/m2。
A preparation method of the three-layer TPE composite inner lining film comprises the following steps:
(1) an A/B double-layer co-extrusion casting embossing machine is adopted, mLLDPE raw materials are put into an extruder A, TPE raw materials are put into an extruder B, and the raw materials are respectively heated and melted and then extruded;
(2) the melted raw materials enter a distributor after passing through a screen changer and a connecting body to form a three-layer structure of mLLDPE-TPE-mLLDPE;
(3) extruding the three-layer structure into a sheet-shaped film through a T-shaped die head;
(4) after the sheet-shaped film is stretched by a patterned roller and a rubber roller which are pressed by circulating water with the temperature of 20 ℃ internally (the pressing force of the patterned roller and the rubber roller is 3 Mpa), the melted film is pressed, cooled and shaped.
In the preparation method, the temperature of each zone of the extruder A is as follows: the temperature of the first area is 170 ℃, the temperature of the second area is 180 ℃, the temperature of the third area is 190 ℃ and the temperature of the fourth area is 90 ℃; the temperature of each zone of the extruder B is as follows: 140 ℃ in the first zone, 160 ℃ in the second zone, 180 ℃ in the third zone, 185 ℃ in the fourth zone and 190 ℃ in the fifth zone.
In the preparation method, the temperatures of the screen changer, the connecting body and the distributor are all 190 ℃.
In the preparation method, the temperature of the 1-11 areas of the T-shaped die head is 190 ℃.
In the preparation method, the pressure of the embossing roller and the pressure of the rubber roller are both 3MPa, and the cooling and shaping temperature is 20 ℃.
An application of the three-layer TPE composite inner lining film in the preparation of an inflatable heat-insulation blanket.
Specifically, the three-layer TPE composite inner lining film is used as an inner lining of the inflatable heat-insulation blanket.
The invention has the beneficial effects that: the three-layer TPE composite inner lining film has the advantages of softness, excellent elasticity and strong puncture resistance. The invention can be used as the inner lining of the inflatable heat-insulating blanket, can be firmly compounded with the spunlace/PE composite material layer, and can not crack or deform in a bearing state.
Drawings
Fig. 1 is a schematic sectional structure view of an inflatable insulation blanket.
Wherein, the inner lining film comprises 1-spunlace cloth, 2-PE layer and 3-three TPE layers.
Detailed Description
The technical solutions of the present invention are described in further detail below with reference to examples, but the scope of the present invention is not limited to the following.
Example 1
A three-layer TPE composite inner lining film is formed by compounding mLLDPE-TPE-mLLDPE three-layer film materials, and the integral square meter gram weight of the film materials is 120 g/m2Wherein the mLLDPE layer has a grammage of 5g/m2The square meter gram weight of the TPE layer is 110g/m2。
The three-layer TPE composite inner lining film adopts an A/B double-layer co-extrusion casting embossing machine, an A/B/A type distributor is selected for layering, and the three-layer TPE composite inner lining film is extruded by a T-shaped die head to form an A/B/A type product structure.
The specific process is as follows:
(1) feeding granular raw material mLLDPE (Exxonmobil chemical industry) into an extruder A, and heating, melting and extruding;
(2) feeding granular TPE (2300-75L per rubber company) into an extruder B, and heating, melting and extruding;
(3) controlling the extrusion amount of the extruder A and the extruder B in proportion, filtering impurities of the molten materials by a screen changer respectively, and then feeding the molten materials into an A/B/A type distributor through a connecting body;
(4) the material is formed into a three-layer structure according to mLLDPE/TPE/mLLDPE by a distributor, and is extruded into a sheet-shaped film by a T-shaped die head;
(5) and (3) stretching the flaky film by a counterpressure embossing roller and a rubber roller which internally circulate circulating water of 20 ℃, and then carrying out hot pressing, cooling and shaping to obtain the final product.
The parameter settings of the A/B double-layer co-extrusion casting embosser are shown in Table 1.
TABLE 1 operating parameters
Figure DEST_PATH_IMAGE001
。
Example 2
The three-layer TPE composite inner lining film obtained in the example 1 can be used as the inner lining of an inflatable heat-preservation blanket. The cross section of the inflatable insulation blanket is shown in figure 1. The inflatable heat-insulating blanket adopts the butt joint of an upper layer and a lower layer which are pressed at intervals to form an air bag, the upper layer and the lower layer have the same structure and are formed by 80g/m2The spunlace/PE composite material layer and three layers of TPE composite inner liner film 3 (prepared in example 1) were compounded, and the upper and lower inner liner films were disposed opposite to each other.
The weight of the particles is 80g/m2The spunlace cloth surface 1 of the spunlace cloth/PE composite material layer is arranged on the outer surface of the inflatable heat-insulating blanket, and can absorb a trace amount of liquid (sweat resistance); the PE layer 2 is arranged between the spunlace cloth and the three-layer TPE composite inner lining film 3, so that the spunlace cloth/PE composite material layer has slight elasticity and high strength and can bear certain external stress.
The three-layer TPE composite inner lining film obtained in the embodiment 1 has the advantages of softness, excellent elasticity and strong puncture resistance, and can still be normally used even if the spunlace/PE composite material layer is damaged by external force, so that the three-layer TPE composite inner lining film is a dual guarantee for the service performance of a product.
Because the lining film is a three-layer structure which is completely fused together, the outer layer is mLLDPE, in the process of manufacturing the inflatable heat-insulating blanket, the upper layer and the lower layer are compounded at intervals through ultrasonic waves, namely the upper layer and the lower layer are provided with compound lines at intervals to form a hollow air bag structure between the upper layer and the lower layer, after high-pressure constant-temperature gas is filled into the air bag, the heat-insulating blanket is expanded and realizes the heat-insulating function, and the inflatable heat-insulating blanket is suitable for the bedding of patients after the operation of a hospital and the bedding of long-term bedridden patients. On the composite line, the spunlace/PE composite material layer, the lining film and the spunlace/PE composite material layer are sequentially compounded together, and after high-pressure constant-temperature gas is injected into the composite material layer, the composite part cannot crack or deform in a bearing state.
In the composite strength, the mLLDPE layer is the most important and is also the key link of product development; the PE layer in the mLLDPE and spunlace/PE composite material layer is a material with the same property, and the two layers can be completely fused together during ultrasonic compounding, so that the compounding strength is ensured; meanwhile, TPE and mLLDPE in the lining film are produced by melt coextrusion and are inseparable whole bodies, so that the whole ultrasonic composite part is a firm whole body and cannot form delamination phenomenon. If the inner liner layer is solitary TPE material, the compound back of ultrasonic wave, spunlace/PE combined material layer can not completely fuse together with the TPE layer, and compound firmness can obviously reduce, influences the product property ability.
Examples of effects
The performance tests of example 1 and example 2 were performed, and the results are shown in table 2.
TABLE 2 Performance test
Figure 847729DEST_PATH_IMAGE002
。
The heat seal strength directly influences the deformation and damage of the heat-insulating blanket during bearing, and the heat seal strength must ensure that the heat-insulating blanket bears the load at the limit (500 kg/m)2) Without deformation and damage. The confirmation control detection proves that the heat-insulating blanket can bear 700kg/m when the heat seal strength reaches more than 45N2Without deformation and damage.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention.

Claims (10)

1. The three-layer TPE composite inner lining film is characterized by comprising a TPE layer and mLLDPE layers compounded on two sides of the TPE layer.
2. The three-layer TPE composite inner liner film in accordance with claim 1, wherein the TPE layer is 2300-75L.
3. The three-layer TPE composite inner liner film as claimed in claim 1, wherein the TPE layer has a grammage of 110g/m2Both of said mLLDPE layers having a grammage of 5g/m2。
4. A method for preparing the three-layer TPE composite inner lining film as claimed in any one of claims 1 to 3, which comprises the following steps:
(1) an A/B double-layer co-extrusion casting embossing machine is adopted, mLLDPE raw materials are put into an extruder A, TPE raw materials are put into an extruder B, and the raw materials are respectively heated and melted and then extruded;
(2) the melted raw materials enter a distributor after passing through a screen changer and a connecting body to form a three-layer structure of mLLDPE-TPE-mLLDPE;
(3) extruding the three-layer structure into a sheet-shaped film through a T-shaped die head;
(4) the sheet-shaped film is stretched by a pair of embossing rollers and rubber rollers which internally circulate circulating water of 20 ℃ to press, cool and shape the molten film.
5. The process according to claim 4, wherein the temperatures of the zones of the extruder A are: the temperature of the first area is 170 ℃, the temperature of the second area is 180 ℃, the temperature of the third area is 190 ℃ and the temperature of the fourth area is 90 ℃; the temperature of each zone of the extruder B is as follows: 140 ℃ in the first zone, 160 ℃ in the second zone, 180 ℃ in the third zone, 185 ℃ in the fourth zone and 190 ℃ in the fifth zone.
6. The method of claim 4, wherein the screen changer, the connector, and the distributor are all at a temperature of 190 ℃.
7. The method according to claim 4, wherein the temperature in each of the zones 1 to 11 of the T-die is 190 ℃.
8. The preparation method according to claim 4, wherein the pressure of the embossing roller and the pressure of the rubber roller are both 3MPa, and the cooling and shaping temperature is 20 ℃.
9. Use of the three-layer TPE composite inner lining film as claimed in any one of claims 1-3 in the preparation of an inflatable insulation blanket.
10. Use according to claim 9, as an inner liner for inflatable insulation blankets.
CN202110005993.1A 2021-01-05 2021-01-05 Three-layer TPE composite lining film and preparation method and application thereof Pending CN112810265A (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5752362A (en) * 1996-03-12 1998-05-19 Tenneco Packaging Stretch wrap films
CN103724791A (en) * 2014-01-02 2014-04-16 苏州艾兴无纺布制品有限公司 Ultrahigh-performance plastic film as well as preparation method and composite material thereof
CN103770422A (en) * 2014-01-23 2014-05-07 黄山永新股份有限公司 High-stiffness puncture-resistant low-friction coefficient composite film and preparation method thereof
CN103832032A (en) * 2012-11-23 2014-06-04 曹修苗 Three-layer co-extrusion EVA composite casting film and manufacture method thereof
WO2015001516A1 (en) * 2013-07-04 2015-01-08 Bia S.R.L. Stretch plastic film
CN110901192A (en) * 2018-09-14 2020-03-24 安徽颜彩包装材料有限公司 Multilayer co-extrusion medical plastic composite packaging film

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5752362A (en) * 1996-03-12 1998-05-19 Tenneco Packaging Stretch wrap films
CN103832032A (en) * 2012-11-23 2014-06-04 曹修苗 Three-layer co-extrusion EVA composite casting film and manufacture method thereof
WO2015001516A1 (en) * 2013-07-04 2015-01-08 Bia S.R.L. Stretch plastic film
CN103724791A (en) * 2014-01-02 2014-04-16 苏州艾兴无纺布制品有限公司 Ultrahigh-performance plastic film as well as preparation method and composite material thereof
CN103770422A (en) * 2014-01-23 2014-05-07 黄山永新股份有限公司 High-stiffness puncture-resistant low-friction coefficient composite film and preparation method thereof
CN110901192A (en) * 2018-09-14 2020-03-24 安徽颜彩包装材料有限公司 Multilayer co-extrusion medical plastic composite packaging film

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