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14 条记录 (耗时 0.031 秒)

    Method and apparatus for molding inflation film
    12.
    发明授权
    Method and apparatus for molding inflation film 失效
    吹塑薄膜成型方法及装置

    公开(公告)号：US5403539A

    公开(公告)日：1995-04-04

    申请号：US091049

    申请日：1993-07-14

    申请人： Toshio Taka ,  Takeshi Onoda ,  Hisashi Hatano ,  Tomoaki Kobayashi ,  Terumitu Kotani

    发明人： Toshio Taka ,  Takeshi Onoda ,  Hisashi Hatano ,  Tomoaki Kobayashi ,  Terumitu Kotani

    IPC分类号： B29C47/00 ,  B29C47/88 ,  B29C55/28

    CPC分类号： B29C47/8835 ,  B29C47/0026 ,  B29C47/0059 ,  B29K2023/0625

    摘要： A method and apparatus for molding an inflation film even from a thermoplastic resin having a small melt tension, in which a melt resin bubble extruded from an extruder is molded, while controlling a resin temperature of the bubble to a certain temperature range by an air ring provided with a plurality of annular slits for blowing cooling air in a take-up direction of the melt resin bubble and provided at a position at which the melt resin bubble is remarkably expanded, after (a) cooling air is blown to a melt resin bubble from a first air ring provided at the proximity of a die outlet to cool said melt resin bubble; and, then, the bubble is either (i) brought into contact, on the inner surface thereof, with the surface of a stabilizer provided on a die surface, or (ii) is supported in a non-contact state through an air layer, while being taken up.

    摘要翻译： 即使由具有较小熔融张力的热塑性树脂成型吹塑薄膜的方法和装置，其中从挤出机挤出的熔融树脂气泡被模塑，同时通过空气环将气泡的树脂温度控制到一定温度范围 设置有多个环形狭缝，用于在熔融树脂气泡的卷绕方向上吹送冷却空气，并设置在熔融树脂气泡显着膨胀的位置之后，（a）将冷却空气吹入熔融树脂气泡 从设置在模具出口附近的第一空气环，以冷却所述熔融树脂气泡; 然后，气泡（i）在其内表面上与设置在模具表面上的稳定器的表面接触，或（ii）以非接触状态通过空气层被支撑， 被占用。

    Low temperature heat shrinkable film and process for producing the same
    13.
    发明授权
    Low temperature heat shrinkable film and process for producing the same 失效
    低温热收缩膜及其制造方法

    公开(公告)号：US5110686A

    公开(公告)日：1992-05-05

    申请号：US447939

    申请日：1989-12-08

    申请人： Toshio Taka ,  Kihachi Shishido ,  Takuo Ohkubo

    发明人： Toshio Taka ,  Kihachi Shishido ,  Takuo Ohkubo

    IPC分类号： B29C47/00 ,  B29C55/02 ,  B29C55/06 ,  B29C61/00 ,  B32B27/32 ,  C08J5/18

    CPC分类号： C08J5/18 ,  B29C55/023 ,  B29C55/06 ,  B29C61/003 ,  B32B27/32 ,  B29C47/0021 ,  B29C47/0026 ,  B29C47/0057 ,  B29C47/0059 ,  B29K2023/06 ,  B29K2995/0063 ,  C08J2323/06 ,  Y10T428/31855 ,  Y10T428/31913

    摘要： The present invention provides a low temperature heat shrinkable film comprising a linear low density polyethylene resin having a short branched chain and a density of 0.935 g/cm.sup.3, and whose film properties are such that the haze value is 5% or less, the heat shrinkages at 90.degree. C. in the M and T directions are 30% or more and 5% or less, respectively, and the shrinkage stress at 90.degree. C. in the M direction is 300 g/mm.sup.2 or more. This transparent film having an excellent low temperature heat shrinkability can be produced by drawing a film of the above-mentioned polyethylene resin between two rolls having a diameter of 200 mm or less at an air gap of 10 mm or less at a draw ratio of 3.0 to 6.0. Further, an inflation film having a multilayer structure can be obtained by press bonding or press bonding and drawing a plurality of films comprising the above-mentioned polyethylene resin. This laminate film has an excellent transparency and strength, and has a uniform film thickness.

    摘要翻译： 本发明提供一种低温热收缩膜，其包含具有短支链，密度为0.935g / cm 3的线性低密度聚乙烯树脂，其膜特性为雾度值为5％以下，热收缩率 在M和T方向的90℃下分别为30％以上且5％以下，M方向的90℃下的收缩应力为300g / mm 2以上。 这种具有优异的低温热收缩性的透明膜可以通过在10mm以下的空气间隙以3.0的拉伸比将上述聚乙烯树脂的膜拉伸到具有200mm以下的直径的两个辊之间来制造 至6.0。 此外，具有多层结构的膨胀膜可以通过压接或压接和拉伸多个包含上述聚乙烯树脂的膜来获得。 该层压膜具有优异的透明性和强度，并且具有均匀的膜厚度。

    High density polyethylene type transparent film and process for production thereof
    14.
    发明授权
    High density polyethylene type transparent film and process for production thereof 失效
    高密度聚乙烯型透明膜及其制造方法

    公开(公告)号：US4954391A

    公开(公告)日：1990-09-04

    申请号：US80514

    申请日：1987-07-07

    申请人： Terumitsu Kotani ,  Toshio Taka ,  Yoshimasa Saito

    发明人： Terumitsu Kotani ,  Toshio Taka ,  Yoshimasa Saito

    IPC分类号： B29C43/24 ,  B29C43/52 ,  B29D7/01 ,  C08J5/18

    CPC分类号： C08J5/18 ,  B29C43/52 ,  B29D7/01 ,  B29C43/24 ,  B29K2023/06 ,  B29K2995/0026 ,  B29K2995/0063 ,  C08J2323/06 ,  Y10T428/31

    摘要： A 10 to 200 .mu.m thick film comprised of high density polyethylene having a density of 0.935 g/cm.sup.3 or more, the high density polyethylene type film having a film surface roughness of 0.001 to 0.15 .mu.m, a coefficient of C axis orientation of the cyrstals in the film (Fc) of 0.10 to 0.50, a difference .DELTA.n of the birefringence of the amorphous portions and crystalline portions in the film of 0.1000 to 0.1070, and a transparency of a haze of less than 10%. Such a film can be produced by passing an original material film through three heating rolls, designated as, for example, the first heating roll (hereinafter referred to as "R.sub.1 "), the second heating roll (hereinafter referred to as "R.sub.2 "), and the third heating roll (hereinafter referred to as "R.sub.3 "), in accordance with the order of the passage of the original material film, at a temperature of R.sub.2 higher than the temperatures of R.sub.1 and R.sub.3 and a temperature of R.sub.2 of 105.degree. C. or more below the melting point of the film, for heat treatment, then cooling the same.The obtained high density polyethylene type film has a superior transparency, a good balance of strength in the M direction and T direction, a remarkably large impact strength, and a large Young's modulus, and thus is suitable for use as a packing film for boxes for cigarettes, caramels, chocolates, etc., chewing gun, candy, and other confectionery.