CN103419314A - Preparation method of non-bright multilayer film - Google Patents
Preparation method of non-bright multilayer film Download PDFInfo
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- CN103419314A CN103419314A CN2012101656324A CN201210165632A CN103419314A CN 103419314 A CN103419314 A CN 103419314A CN 2012101656324 A CN2012101656324 A CN 2012101656324A CN 201210165632 A CN201210165632 A CN 201210165632A CN 103419314 A CN103419314 A CN 103419314A
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- cloudy surface
- multilayer film
- thermoplastic polyurethane
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Abstract
The invention provides a preparation method of a non-bright multilayer film. The preparation comprises following steps: thermoplastic polyurethane plastic and an UV-resistant heat-resistant anti-ageing agent are subjected to mixing so as to obtain a plastic; the plastic is calendered to form a thermoplastic polyurethane (TPU) thin film with a preset thickness by heat calendaring, and at the same time a polycarbonate (PC) thin film is preheated under a high temperature, so as to keep the stable flatness of the polycarbonate thin film; the thermoplastic polyurethane (TPU) thin film is glued on to one surface of the polycarbonate thin film by calendaring so as to obtain a semi-finished product; and at last, the thermoplastic polyurethane thin film is coated with a layer of a non-bright surface agent, and is heated so as to obtain bridging effect, and a non-bright surface of the semi-finished product. Then the non-bright multilayer film finished product that contains the polycarbonate thin film, the thermoplastic polyurethane thin film and possesses a non-bright surface is obtained.
Description
Technical field
The present invention relates to a kind of manufacture method of cloudy surface multilayer film, particularly a kind of cloudy surface multilayer film manufacture method with scratch resistance and cloudy surface characteristic.
Background technology
Polyvinyl chloride (Polyvinylchlo ride, PVC) be the five large general unique plastic containing chlorines in plastics (PE, PVC, PP, PS, ABS) of using, due to chloride cause, make it can be by the interpolation of plasticiser, and the change pliability, characteristic by this, can reduce production technology door and the cost of product, allow the producer can manufacture easily the various products that pliability is different, therefore extensively be present in arround our life.Yet, polyvinyl chloride is except itself having the shortcomings such as the poor and poor impact resistance of low-temperature flex resistance, goods can produce malicious dioxin (Polychlo rinated Dibenzo-p-dioxins in hot environment or incineration of garbage process, PCDD), chlorine and heavy metal particle, by international green peace organization, be called in " malicious plastics ", our living environment and healthy in serious threat.
Further, environmental consciousness is surging in recent years, for responding environmental protection, selects gradually environment-friendly materials to make the product of various kenels, for example uses thermoplastic polyurethane (Thermoplastic Polyurethane, TPU) material to replace polyvinyl chloride.In detail, thermoplastic polyurethane refers to a kind of not containing plasticizer, and is macromolecular elastomer, and physical property is between rubber and plastics, in existing rubber/plastic material, wear-resisting, anti-complications that thermoplastic polyurethane has, deep drawing quality, high anti-tearing strength, the characteristic such as low temperature resistant.Because thermoplastic polyurethane is a kind of avirulent environment-friendly materials of maturation, therefore can be widely used in the various fields such as footwear, sporting goods, one-tenth clothing, medical class.
With regard to the demand difference of various industry products, the character of thermoplastic polyurethane is developed various specialities through constantly improving, promoting.But the thermoplastic polyurethane goods only can present the surface of bright, this surface has dry and astringent problem and affects the hand sense of touch; Moreover except in response to environmental issue, the aesthetic problem of product appearance has also been brought infinite commercial opportunities because this bright easily to stay the shortcomings such as fingerprint, stains or scratch after touching be also the problem urgently further solved.
In view of this, it is starting point that the demand attractive in appearance that has nontoxicity and product appearance concurrently is take in the present invention then, and, for the disappearance of above-mentioned prior art, proposes a kind of manufacture method of cloudy surface multilayer film, effectively to overcome these above-mentioned problems.
Summary of the invention
Main purpose of the present invention is to provide a kind of manufacture method of cloudy surface multilayer film.
For reaching above-mentioned purpose, the present invention realizes by the following technical solutions:
The invention provides a kind of manufacture method of cloudy surface multilayer film, comprise the following steps: by thermoplastic polyurethane plastic and the agent of anti-UV heat ageing after mixing to form plastics; The processing of recycling hot calender is processed, and plastics is calendered to a preset thickness, to form a thermoplastic polyurethanes film; One polycarbonate film is provided, and carries out high temperature preheating, make polycarbonate film possess stable flatness; Again the thermoplastic polyurethanes film rolling is fitted on the single face of polycarbonate film, to form semi-finished product; And paper one deck cloudy surface agent on thermoplastic polyurethane film, through heating and producing bridging action, make semi-finished product form cloudy surface, can complete a cloudy surface multilayer film finished product.
Adopt technical scheme of the present invention, there is following advantage:
1. can keep the characteristic of original printing opacity, the energy secondary printing, in the back side, is beneficial to back segment processing and rushes the film moulding, and then improves the problem of sealing between tradition processing upper film and film.
2. need the application on scratch resistance, cloudy surface surface for electronic product or any household appliances, have concurrently product appearance demand attractive in appearance, there is smooth soft contact feel, touch and do not stay the advantages such as fingerprint and scratch resistance.
3. use avirulent environment-friendly materials, can significantly increase Bonding strength one time, make follow-up laminating processing more stable, and then improve and produce yield and production efficiency.
4. can keep the characteristic of original printing opacity, contribute to the pattern of finished product and color to represent.
The accompanying drawing explanation
Fig. 1 is flow chart of steps of the present invention;
Fig. 2 A to Fig. 2 C is each step structure cutaway view that the present invention makes the cloudy surface multi-layer film structure.
Description of reference numerals: 10-thermoplastic polyurethane film; The 12-polycarbonate film; The agent of 14-cloudy surface.
The specific embodiment
The present invention responds environmental protection subject, therefore make product at this with ripe and avirulent thermoplastic polyurethane environment-friendly materials, through inventor's years of researches and exploitation, utilize and penetrate level (low), the extrusion level, the different brackets of blown film level (height) is made the product of each kenel tool thermoplastic polyurethane, for improving denouncing of existing product, the invention provides a kind of multilayer film with cloudy surface and scratch resistance function, mainly to need scratch resistance for electronic product (3C) or any household appliances, the application on cloudy surface surface, follow-uply will introduce in detail the present invention and complete the product of cloudy surface multilayer film as a kind of new procedure how.
See also Fig. 1 and Fig. 2 A to Fig. 2 C, Fig. 1 is flow chart of steps of the present invention, and Fig. 2 A to Fig. 2 C is each step structure cutaway view that the present invention makes the cloudy surface multi-layer film structure.As shown in Figure 1, at first, as step S 10, thermoplastic polyurethane plastic and the agent of anti-UV heat ageing are carried out to high temperature and mix to form plastics.Wherein high temperature mixes and comprises that the two-stage with 10,000 horsepowers of mixing rolls and a second wheel device mixes, optimum proportion is that thermoplastic polyurethane plastic is 50～100 parts, the agent of anti-UV heat ageing is 0.1～0.15 part, and the agent of anti-UV heat ageing is light stabilizer and antioxidant blends.First mixing with ten thousand horsepowers of mixing rolls, and the temperature of mixing process is controlled in 120 ℃～160 ℃, the time of mixing, between 10～20 minutes, mixes until plastics are softening and preliminary.Mixing through the second wheel device again, and the temperature of mixing process is controlled in 120 ℃～160 ℃, the time of mixing was between 10～50 minutes, until plastics are fully mixing.Moreover, thermoplastic polyurethane plastic used in the present invention, by soft section linear block copolymers formed with the hard section of vulcabond-chain extender of oligomer polyol, and contain-NH-COO-of the molecule of thermoplastic polyurethane plastic group, its a lot of characteristics depend on the kind of long chain diol, and hardness is done ratio by hard section and regulated, at this, the optimal hardness scope of the present invention's allotment is shore hardness A60 ~ 90; Again for the light aging of thermoplastic polyurethane plastic, can add light stabilizer is improved, namely anti-UV heat ageing agent, can slow down the environmental factors such as light, heat or oxidation and cause macromolecule yellow in thermoplastic polyurethane plastic, the signs of degradation such as fade, to maintain engineering properties, colour stability and high transparent.
Step S12, recycle hot calender processing and process for another example, plastics is calendered to a preset thickness, as preset thickness can be 0.1 millimeter (mm)～0.3 millimeter (mm), to form a thermoplastic polyurethane film 10, in this as the first tunic, as shown in Figure 2 A.As step S14, Merlon (Polycarbonate, a PC) film 12 is provided, as the second tunic, and carry out high temperature (150 ~ 180 ℃) preheating, make polycarbonate film 12 possess stable flatness; Wherein, polycarbonate membrane 12 has the characteristics such as water white transparency, heat-resisting, shock resistance, fire-retardant and high-mechanical property.Utilize the polycarbonate film 12 of this plurality of advantages to continue and carry out next step S 16, thermoplastic polyurethane film 10 calenderings are fitted on the single face of polycarbonate film 12, there are semi-finished product of two membranes with formation, as shown in Fig. 2 B.Wherein the process of calendering laminating is first to utilize conveyer belt that thermoplastic polyurethane film 10 is sent into to a calendering make-up machine, and roll on the single face that fits in polycarbonate film 12, and the roller temperature of calendering make-up machine is controlled in 130 ℃ ~ 155 ℃, laminate pressure is controlled in 5～10kg/cm
2, can complete the procedure of two tunics.
Step S18 for another example, paper one deck cloudy surface agent 14 on thermoplastic polyurethane film 10, it first utilizes conveyer belt that semi-finished product are sent in a pasting machine, then cloudy surface agent 14 is evenly papered on thermoplastic polyurethane film 10, the viscosity of cloudy surface agent 14 is controlled in 1400PHR～1800PHR, through a baking oven heating, its heating and temperature control is in 40 ℃～110 ℃, and 60～120 seconds time of staying, after cloudy surface agent 14 interior solvents are brought into play fully, to produce bridging action, so make semi-finished product form cloudy surface, can complete the cloudy surface multilayer film finished product with trilamellar membrane, as shown in Figure 2 C.Wherein, cloudy surface agent 14 is xanthochromia PU bridge formation curing agent not, polyester (Polyurethane with high activity cyanic acid base (NCO), be called for short PU), reactive strong, can with the two liquid type polyurethane resin reaction, reach tough physical property, therefore can give the effect that cloudy surface multilayer film finished product reaches cloudy surface, scratch resistance.
In sum, the procedure of novelty of the present invention, the characteristic that can keep original printing opacity, the energy secondary printing is in the back side, be beneficial to back segment processing and rush the film moulding, in other words, can make follow-up laminating processing more stable, and then improve and produce yield and production efficiency, and also can improve the problem of sealing between tradition processing upper film and film.Moreover, need the application on scratch resistance, cloudy surface surface for electronic product or any household appliances, utilize above-mentioned preparation method, not only can keep the characteristic of original printing opacity, contribute to pattern and the color of finished product to represent, augment again atomized surface effect, have concurrently product appearance demand attractive in appearance, there is smooth soft contact feel, touch and not stay the advantages such as fingerprint and scratch resistance.
Claims (12)
1. the manufacture method of a cloudy surface multilayer film, is characterized in that, comprises the following steps:
By thermoplastic polyurethane plastic and the agent of anti-UV heat ageing after mixing to form plastics;
Utilize hot calender processing to process, these plastics are calendered to a preset thickness, to form a thermoplastic polyurethane film;
One polycarbonate film is provided, and carries out high temperature preheating;
This thermoplastic polyurethane film calendering is fitted on the single face of this polycarbonate film, to form semi-finished product; And
Paper one deck cloudy surface agent on this thermoplastic polyurethane film, through heating and producing bridging action, make these semi-finished product form cloudy surface to complete a cloudy surface multilayer film finished product.
2. the manufacture method of cloudy surface multilayer film as claimed in claim 1, it is characterized in that, it is 0.1～0.15 part with the agent of anti-UV heat ageing that this thermoplastic polyurethane plastic is 50～100 parts, after 10,000 horsepowers of mixing rolls are preliminary mixing, more fully mixing to form this plastics through a second wheel device.
3. the manufacture method of cloudy surface multilayer film as claimed in claim 2, is characterized in that, the temperature that these ten thousand horsepowers of mixing rolls carry out mixing process is controlled in 120 ℃～160 ℃, and the time of mixing, between 10～20 minutes, mixes until these plastics are softening and preliminary.
4. the manufacture method of cloudy surface multilayer film as claimed in claim 2, is characterized in that, the temperature that this second wheel device carries out mixing process is controlled in 120 ℃～160 ℃, and the time of mixing is between 10～50 minutes, until fully mixing.
5. the manufacture method of cloudy surface multilayer film as claimed in claim 1, is characterized in that, in this calendering laminating step, first utilizes conveyer belt that this thermoplastic polyurethane film is sent into to a calendering make-up machine, and roll on the single face that fits in this polycarbonate film.
6. the manufacture method of cloudy surface multilayer film as claimed in claim 5, is characterized in that, the roller temperature of this calendering make-up machine is controlled in 130 ℃ ~ 155 ℃, and laminate pressure is controlled in 5～10kg/cm2.
7. the manufacture method of cloudy surface multilayer film as claimed in claim 1, is characterized in that, this preset thickness can be 0.1 millimeter～0.3 millimeter.
8. the manufacture method of cloudy surface multilayer film as claimed in claim 1, is characterized in that, this cloudy surface agent is xanthochromia type polyurethane inorganic agent not.
9. the manufacture method of cloudy surface multilayer film as claimed in claim 1, is characterized in that, in the step that this paper is processed, first utilizes conveyer belt that these semi-finished product are sent in a pasting machine, and this cloudy surface agent is evenly papered on this thermoplastic polyurethane film.
10. the manufacture method of cloudy surface multilayer film as claimed in claim 1, is characterized in that, the viscosity of this cloudy surface agent is controlled in 1400PHR～1800PHR, and through a baking oven heating, solvent in this cloudy surface agent is brought into play fully after to produce this bridging action.
11. the manufacture method of cloudy surface multilayer film as claimed in claim 1, is characterized in that, this heating and temperature control is in 40 ℃～110 ℃, and 60～120 seconds time of staying.
12. the manufacture method of cloudy surface multilayer film as claimed in claim 1, is characterized in that, the hardness range of this thermoplastic polyurethane plastic is shore hardness A60 ~ 90.
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| CN2012101656324A CN103419314A (en) | 2012-05-24 | 2012-05-24 | Preparation method of non-bright multilayer film |
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| CN2012101656324A CN103419314A (en) | 2012-05-24 | 2012-05-24 | Preparation method of non-bright multilayer film |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106565979A (en) * | 2016-11-09 | 2017-04-19 | 宁波启合新材料科技有限公司 | Preparation method of thermoplastic polyurethane (TPU) elastomer thin film |
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- 2012-05-24 CN CN2012101656324A patent/CN103419314A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106565979A (en) * | 2016-11-09 | 2017-04-19 | 宁波启合新材料科技有限公司 | Preparation method of thermoplastic polyurethane (TPU) elastomer thin film |
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Application publication date: 20131204 |