Sumitomo Chemical Company, Limited

Satoshi Hanada

Ryuma Kuroda

Takeshi Yamada

Atsuhiro Takata

Taiichi Sakaya

Nobuhiro Usui

Mitsunori Nodono

The present invention provides a thermoplastic resin-molded article comprising a thermoplastic resin functional member fused partially to a foamed sheet made of thermoplastic resin shaped in a predetermined form, as well as a process for producing the same. The thermoplastic molded article is preferably used mainly as an interior part in automobiles. According to the present invention, thermoplastic resin molded articles having less variability of the drawing strength of thermoplastic resin functional members from thermoplastic resin foamed sheets can be provided, and these used in interior parts in automobiles. Such molded articles made of thermoplastic resin can be produced efficiently according to the process of the present invention.

Thermoplastic resin-molded article and a process for producing the same

A film-like materials of resin manufacturing method for producing a film-like material made of a resin by rolling a thermoplastic resin material containing a thermoplastic resin using a molding apparatus comprising first rotation molding members composed of a pair of rollers, wherein the method is characterized in that the rotation molding is carried out under the conditions satisfying the following inequalities of the line contact pressure P (kN/m) applied to the thermoplastic resin, the peripheral velocity R (m/sec) of the rollers of the first rotation molding members, and the thickness H (m) of the film-like material made of the resin after rolling. (formula 1) 3&#xd7;9.8&#x2266;P (formula 2) 3&#xd7;9.8&#xd7;10&#x2266;P/(R/H)&#x2266;2&#xd7;9.8&#xd7;10, wherein the reference character P denotes the line contact pressure P (kN/m), the reference character R denotes the peripheral velocity (m/sec) of the rotation molding members, and the reference character H denotes the thickness (m) of the film-like material made of the resin after rolling.

Manufacturing method of film-like materials of resin and film-like materials of resin

The polyolefin [A] has a weight average molecular chain length of 2850 nm or longer and a density &#x3c1;(g/cm), the polyolefin wax [B] has a weight average molecular weight of 700&#x2013;6000 and a density &#x3c1;(g/cm), the polyolefin and the polyolefin wax are incorporated at [A]/[B]=90/10&#x2013;50/50 (ratio by weight), and the densities &#x3c1;and &#x3c1;satisfy the following conditions: 0.92&#x2266;&#x3c1;&#x2266;0.94, 0.91&#x2266;&#x3c1;&#x2266;0.93, &#x2212;0.03&#x2266;(&#x3c1;)&#x2266;0.03.

Polyolefin series resinfilm, composition for preparing the same, process for preparing the composition for preparing the same, and apparatus for preparing the same

To provide a slitting method of a battery separator-use resin film object that is less susceptible to occurrences of holes and tearing at the time of a slitting process. A slitting device, which is provided with a feeding roll 51 for feeding a film that is wound up to a role with its rotational velocity being controlled, a razor blade for slitting the film to a predetermined width, a sensor for detecting a tension of the film and winding rolls for winding the film up while controlling its tension, is used for carrying out a slitting process in a manner so as to satisfy the following conditions (1) and (2): (Condition 1) 5&#xd7;9.8&#xd7;10&#x2266;T/L&#x2266;5&#xd7;9.8&#xd7;10(Condition 2) 1&#x2266;R/T&#x2266;5 where L is a thickness (m) of the film object, R is a rotational velocity (m/min) of the feeding roll and T is a tension (N/m) of the film object after having been subjected to the slitting operation.

Method of slitting a battery separator-use resin film object and such a battery separator-use resin film object

An object of the present invention is to provide a foamed polyolefin resin sheet which exhibits a high adhesive strength when laminated with a layer formed of a saponified ethylene-vinyl ester copolymer and which still exhibits a high adhesive strength even when laminated with a layer of a thermoplastic resin having relatively low polarity such as a polyolefin resin. This object is attained by a foamed polyolefin resin sheet including a foamed polyolefin resin layer and a non-foamed surface layer formed of a thermoplastic resin composition having an A1/A2 ratio falling within a range between 1&#xd7;10and 1&#xd7;10, wherein A1 is a maximum absorbance of the infrared absorption spectrum of the thermoplastic resin composition within an infrared ray wave number region of from 1700 to 1750 cmand A2 is a maximum absorbance of the infrared absorption spectrum of the thermoplastic resin composition within an infrared ray wave number region of from 1455 to 1465 cm.

Foamed polyolefin resin sheet

To provide a polyolefin based resin film of high elastic modulus and a composition for producing a polyolefin based resin film of high elastic modulus. The polyolefin based resin film is characterized in that a polyolefin [A] having a weight average molecular chain length of 2850 nm or more and a polyolefin wax [B] having a weight average molecular weight of 700 to 6000 have been compounded in a ratio of [A]/[B]=90/10 to 50/50 (by weight) as the resin component, and 10 to 300 parts by weight of inorganic fillers have been added to 100 parts by weight of the resin component.

Polyolefin based resin film and a composition for a polyolefin type resin film

A drawn film production method including steps of drawing a crystalline thermoplastic resin film in the TD direction is characterized in that the orientation coefficient of the c-axis of the crystal of the thermoplastic resin in the film to the MD direction of the film is 0.8 or higher.

Production method of drawn film

The present invention provides a thermoplastic resin sheet having a thermoplastic resin expanded layer of which expansion ratio is in the range of 3 to 40 times, and cell wall density ratio is in the range of 2 to 20, said thermoplastic resin sheet having excellent thermal insulation property, and a container being formed from the thermoplastic resin sheet.

Thermoplastic resin sheet and container

An object of the present invention is to provide a foamed polypropylene resin container for microwave cooking which is free from deformation upon cooking by a microwave oven and excellent in heat resistance. The foamed polypropylene resin container for microwave cooking of the present invention, on at least one side of a foamed polypropylene resin layer, a non-foamed layer containing 100 parts by weight of a polypropylene resin and 40 to 100 parts by weight of talc.

Formed polypropylene resin container for microwave cooking

Process for producing a thermoplastic resin-molded article

Resin materials and films made therefrom

Shrinkable film

There is provided a resin composition which comprises 100 parts by weight of a saponified ethylene/vinyl acetate copolymer (A) and 0.00001-20 parts by weight of a condensed silicate of lithium aluminium double hydroxide (B) wherein the saponified ethylene/vinyl acetate copolymer (A) has 20-50 mole % ethylene units and has a saponification degree of vinyl acetate unit of at least 96%. The resin composition is excellent in heat stability. The resin composition may contain a thermoplastic resin other than the copolymer (A). The resin composition containing the copolymer (A) and the other thermoplastic resin is excellent in compatibility as well as in heat stability.

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Ibaraki, Japan

Satoshi Hanada