CN101633238B - Antiskid plastic film manufacturing process and antiskid plastic film - Google Patents
Antiskid plastic film manufacturing process and antiskid plastic film Download PDFInfo
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- CN101633238B CN101633238B CN 200910041868 CN200910041868A CN101633238B CN 101633238 B CN101633238 B CN 101633238B CN 200910041868 CN200910041868 CN 200910041868 CN 200910041868 A CN200910041868 A CN 200910041868A CN 101633238 B CN101633238 B CN 101633238B
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Abstract
The invention relates to the field of plastic film manufacturing process and discloses an antiskid plastic film manufacturing process and an antiskid plastic film. The process comprises the following steps: feeding at least two materials to a die head through various material channels, wherein, the material for forming an external layer of the plastic film has the maximum melting temperature and cooling rate lower than that of an adjacent layer; melting various materials in various material channels to keep the material of the external layer in an incomplete molten granular state and the materials of other layers in a complete molten state; performing coextrusion and film blowing on various materials at the die head; and cooling to obtain shaped plastic film. Antiskid properties of the external layer of the plastic film can be improved by the scheme without affecting physical properties of the plastic film.
Description
Technical field
The present invention relates to plastic sheeting manufacturing process field, relate in particular to a kind of manufacturing process and plastic sheeting of plastic sheeting.
Background technology
Plastic products are a kind of product that people often use in life, industrial production,
Existing plastic sheeting adopts a kind of complete melting charge to adopt usually and extrudes blown film, cooling obtains, and the smooth outer surface of the plastic sheeting integral body that obtains can exist to send out easily in the process of application and slide.
In order to address this problem, often adopt following technical scheme in the prior art after plastic sheeting/polybag moulding, adopt texturizing method, form rough lines at product surface, to play anti-skidding effect.
But there is following defective in this technology:
(1) in the embossing process, because surface pressing is bigger, the physical property of product surface embossing part is reduced, under stressed situation, very easily break;
(2) adopt texturizing method, ectonexine is pressurized simultaneously, and goods inside also can form embossing, can't guarantee that bag is interior smooth, and influence is used.
In addition, in the prior art, for physical properties such as the toughness that guarantees plastic sheeting and compactness, the melting degree of strict control of material in the manufacturing process of existing plastic sheeting, to guarantee that the complete fusion of each material is to guarantee the better mobile of material, the physical property of the plastic sheeting that blown film obtains is good, avoids because the skewness of melted material, has particle and influences that situation such as duck eye appears in moulding and the relatively poor problem of serviceability that causes plastic sheeting.
Summary of the invention
The present invention's first purpose is: a kind of manufacturing process of plastic sheeting is provided, and it can improve the outer non-skid property of plastic sheeting on the basis that does not influence the plastic sheeting physical property.
The embodiment of the invention second purpose is: a kind of plastic sheeting is provided, and it can improve the outer non-skid property of plastic sheeting on the basis that does not influence the plastic sheeting physical property.
The manufacturing process of a kind of plastic sheeting that the embodiment of the invention provides comprises:
Supply with at least two kinds of materials to die head respectively by each material road, wherein: the melting temperature that forms the outer field material of plastic sheeting is the highest, and the cooling velocity that forms the outer field material of plastic sheeting is lower than the cooling velocity of the material that is adjacent layer;
Described respectively expect in described each material of fusion, make outer field material be in the graininess of incomplete fusion, other layers of materials are in complete molten condition;
At described die head place described each material is carried out coextrusion film blowing;
Cool off, obtain the plastic sheeting of moulding.
Alternatively, wherein, the hardness of the material of the layer adjacent with described skin is higher than the hardness of described outer field material.
Alternatively, the melting temperature of described cladding material is 200 ℃, and the melting temperature of intermediate layer material is 130 ℃,
In fusion materials flow time control system temperature, make outer field materials flow be in incomplete fusion state, specifically:
The temperature of machine barrel is set between 150 ℃-170 ℃, makes intermediate layer material fusion, cladding material be in incomplete fusion state.
A kind of plastic sheeting that the embodiment of the invention provides, the superficies of described plastic sheeting are graininess.
Therefore, by to outer, melt temperature, the selection of cooling velocity with the material of outer adjacent layer, and the temperature of control fusion in the process of fusion, when cooling, because the fastest, so this layer cooling forming and stop outer field graininess to enter rapidly makes graininess only be distributed in the skin of plastic sheeting with the cooling velocity of outer adjacent layer, and the molding effect that guarantees other layers is unaffected, guarantees that the plastic sheeting that obtains has physical properties such as good toughness, compactness.
In addition, the technical scheme of present embodiment, broken through and in the coextrusion film blowing technology of plastic sheeting, should stop the technology deflection that graininess exists in the prior art, make to form graininess, and guarantee that by selection, the temperature controlling of material the plastic sheeting that obtains has good physical property at skin.
The specific embodiment
Describe the present invention in detail below in conjunction with accompanying drawing and specific embodiment, be used for explaining the present invention in this illustrative examples of the present invention and explanation, but not as a limitation of the invention.
Embodiment 1:
The manufacturing process of the plastic sheeting that present embodiment proposes, it mainly adopts coextrusion blow technology, and it mainly may further comprise the steps:
Be respectively charged into different raw material in two barrels, in the selection of material, make that the melting temperature that is used to form the outer field material of plastic sheeting is the highest, the cooling velocity of the material of internal layer (promptly with outer adjacent layer) is higher than the cooling velocity of cladding material.
Each barrel is connected with a die head respectively, and materials flow passage between each barrel that is used for pan feeding and die head is each material of fusion respectively, the temperature of control fusion when fusion: make outer field material be heated to be melted journey to be in incomplete melting state, be graininess; And other layers of materials are in complete molten condition, for other material roads that go out outside the material road, cladding material place, can use the smelting process (temperature and pressure) of prior art to carry out, for material road, cladding material place, be the better mobile of granular material in order to make, in the material road, can adjust the flowing velocity of material in the material road by intensified pressure, and adjust the distribution of particle in the material, make that its distribution is comparatively even.Such as:
Can select for use melting temperature to be respectively 130 ℃ material as the material of internal layer, melting temperature be 200 ℃ material respectively as outer field material, the temperature of each barrel of machine can be set between 150 ℃-170 ℃.At this moment, melting temperature is that 130 ℃ inner layer material melts, and melting temperature to be 200 ℃ raw material also do not have complete fusion, only be to begin softening can flowing, be graininess.
Each material is by behind each material road runner die head, and coextrusion film blowing obtains plastic sheeting at the die head place, and outer field material forms the skin of plastic sheeting, the internal layer of inner layer material performance plastic sheeting.
Cool off the plastic sheeting that coextrusion film blowing obtains fast, make its typing.In process for cooling, owing to consider in the ordinary course of things, the raw material that are in molten stream mode have flowable under the prepattern state.
In order to prevent that the outer particle that forms from along with the melt that flows flows into internal layer by skin, making internal layer also be full of particle, cause the problem of the decline of product physical property in the present embodiment.Present embodiment is when process for cooling, accelerate the speed of cooling, internal layer is cooled off fast, form plasticizing typing film, can intercept outer granular materials and enter, guarantee that particle only forms at skin, and can't enter internal layer, thereby plasticizing, the molding effect of the internal layer of the plastic sheeting of assurance moulding are intact, and physical properties such as the toughness of assurance plastic sheeting, compactness are good; Simultaneously, it is smooth that internal layer can keep, and makes practical and convenient.
Therefore, by to outer, melt temperature, the selection of cooling velocity with the material of outer adjacent layer (internal layer), and the temperature of control fusion in the process of fusion, when cooling, because it is the fastest with the cooling velocity of outer adjacent layer (internal layer), so this layer is cooling and shaping and stop outer field graininess to enter rapidly, make graininess only be distributed in the skin of plastic sheeting, and guarantee that the plasticizing of other layers, typing effect are unaffected, guarantee that the plastic sheeting obtain has physical properties such as good toughness, compactness.
In addition, the technical scheme of present embodiment, broken through and in the coextrusion film blowing technology of plastic sheeting, should stop the technology deflection that graininess exists in the prior art, make to form graininess, and guarantee that by selection, the temperature controlling of material the plastic sheeting that obtains has good physical property at skin.
Embodiment 2:
1 difference of this enforcement side and embodiment is following:
Adopt in the present embodiment in three barrels and supply with material by material road phase die head separately respectively, at die head place coextrusion plastic sheeting, this plastic sheeting has skin, intermediate layer, internal layer respectively.
When selecting the material of each layer, with embodiment 1 in like manner, make that the melting temperature that is used to form the outer field material of plastic sheeting is the highest, the cooling velocity of the material of intermediate layer (promptly with outer adjacent layer) is higher than the cooling velocity of cladding material.
Such as: can select for use melting temperature to be respectively 130 ℃ material as the material in internal layer, intermediate layer, melting temperature be 200 ℃ material respectively as cladding material, the temperature of each barrel of machine can be set between 150 ℃-170 ℃.At this moment, melting temperature is that 130 ℃ intermediate layer, inner layer material melts, and melting temperature to be 200 ℃ cladding material also do not have complete fusion, only be to begin softening can flowing, be graininess, make that this granular material is distributed in skin when blowing.
Therefore, by to outer, melt temperature, the selection of cooling velocity with the material of outer adjacent layer (intermediate layer), and the temperature of control fusion in the process of fusion, when cooling, because it is the fastest with the cooling velocity of outer adjacent layer (intermediate layer), so this layer is cooling and shaping and stop outer field graininess to enter intermediate layer, internal layer rapidly, make graininess only be distributed in the skin of plastic sheeting, and guarantee that the plasticizing of other layers, typing effect are unaffected, guarantee that the plastic sheeting obtain has physical properties such as good toughness, compactness.
Need to prove, embodiment 1,2 adopts 2,3 layers as illustrating the manufacturing process to present embodiment to describe, but be not limited in this, in the process that plastic sheeting is made, can in four layers, five layers even more multi-layered plastic sheeting, use this technological process, all belong to expanded range of the present invention, only can access that skin has granular plastic sheeting, the physical property of the plastic sheeting that obtains is good, and outerly has an anti-skidding effect.
Embodiment 3:
1,2 differences of present embodiment and embodiment only are:
With the selection of outer adjacent layer material on, further in the selection condition of embodiment 1,2, further select: hardness be higher than outer field material hardness material as and outer adjacent layer material.
Other PROCESS FOR TREATMENT flow process and condition and embodiment 1,2 are in like manner, like this when cooling, adjacent with skin layer cooling and shaping apace becomes the plasticizing typing film of high rigidity, can further intercept outer granular materials enters, guarantee that particle only forms at skin, and can't enter other the layer, further guarantee plasticizing forming plastic sheeting internal layer plasticizing, the typing effect intact, guarantee that further the plastic sheeting that obtains has good physical property.
The plastic sheeting that can utilize present embodiment to obtain is made various polybags or other plastic products in practice, makes the skin of polybag (perhaps other plastic products) have graininess, plays anti-skidding effect, and is more convenient to use.
More than the technical scheme that the embodiment of the invention provided is described in detail, used specific case herein the principle and the embodiment of the embodiment of the invention are set forth, the explanation of above embodiment only is applicable to the principle that helps to understand the embodiment of the invention; Simultaneously, for one of ordinary skill in the art, according to the embodiment of the invention, the part that on the specific embodiment and range of application, all can change, in sum, this description should not be construed as limitation of the present invention.
Claims (3)
1. the manufacturing process of a plastic sheeting is characterized in that, comprising:
Supply with at least two kinds of materials to die head respectively by each material road, wherein: the melting temperature that forms the outer field material of plastic sheeting is the highest, and the cooling velocity that forms the outer field material of plastic sheeting is lower than the cooling velocity of the material that is adjacent layer;
Described respectively expect in described each material of fusion, make outer field material be in the graininess of incomplete fusion, other layers of materials are in complete molten condition;
At described die head place described each material is carried out coextrusion film blowing;
Cool off, obtain the plastic sheeting of moulding.
2. the manufacturing process of plastic sheeting according to claim 1 is characterized in that,
Wherein, the hardness of the material of the layer adjacent with described skin is higher than the hardness of described outer field material.
3. the plastic sheeting that application rights requires 1 or 2 described plastic sheeting manufacturing process to obtain is characterized in that,
The superficies of described plastic sheeting are graininess.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910041868 CN101633238B (en) | 2009-08-14 | 2009-08-14 | Antiskid plastic film manufacturing process and antiskid plastic film |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910041868 CN101633238B (en) | 2009-08-14 | 2009-08-14 | Antiskid plastic film manufacturing process and antiskid plastic film |
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| Publication Number | Publication Date |
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| CN101633238A CN101633238A (en) | 2010-01-27 |
| CN101633238B true CN101633238B (en) | 2013-07-24 |
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| CN 200910041868 Active CN101633238B (en) | 2009-08-14 | 2009-08-14 | Antiskid plastic film manufacturing process and antiskid plastic film |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1597304A (en) * | 2004-08-16 | 2005-03-23 | 中国科学院长春应用化学研究所 | Preparation method of self-adhesive polyethylene base protection film |
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- 2009-08-14 CN CN 200910041868 patent/CN101633238B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1597304A (en) * | 2004-08-16 | 2005-03-23 | 中国科学院长春应用化学研究所 | Preparation method of self-adhesive polyethylene base protection film |
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| CN101633238A (en) | 2010-01-27 |
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Owner name: GUANGZHOU TONGYUAN PLASTIC PRODUCTS CO., LTD. Free format text: FORMER OWNER: GUANGZHOU TUOFENG TRADING CO., LTD. Effective date: 20140123 |
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Free format text: CORRECT: ADDRESS; FROM: 510000 GUANGZHOU, GUANGDONG PROVINCE TO: 510900 GUANGZHOU, GUANGDONG PROVINCE |
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Effective date of registration: 20140123 Address after: 510900, Guangdong, Guangzhou Conghua suburb Street doctor Tian Village, No. 39 Patentee after: GUANGZHOU TONGYUAN PLASTIC PRODUCT CO., LTD. Address before: 510000, 1410 business center, Jiangwan new town, 298 Yanjiang Road, Yuexiu District, Guangdong, Guangzhou Patentee before: Guangzhou Tuofeng Trading Co., Ltd. |