摘要:
A process for producing a film is provided and includes extruding a multilayer film with a core component comprising from 15 to 1000 alternating layers of layer A material and layer B material. The layer A material has a crystallization temperature, T 1 c . The process includes passing the multilayer film across an air gap having a length from 10 mm to 800 mm. The process includes moving the multilayer film across a roller at a rate from 20 kg/hr to 1000 kg/hr. The process includes maintaining the roller at a temperature from T 1 c - 30°C to T 1 c , and forming a multilayer film with a layer A having a thickness from 50 nm to 500 nm and an effective moisture permeability from 0.77 to 2.33 g-mil/m 2 /24 hrs.
摘要:
본 발명은 압출용 다이스 라인에 관한 것으로, 압출기 본체(200)와 연결되는 'T'자 형태의 파이프로써 용융물을 이송하는 주입관(10);과, 주입관(10)상에서 연장형성되는 파이프로써 일정간격으로 병렬 구비되는 하나 이상의 공급관(20);과, 공급관(20)상에 결합되고 전동모터(31)에 의해 회전축(32)을 구동하여 공급관(20)내의 용융물을 압송시키는 기어펌프(30);와, 상기 공급관(20)의 단부에 결합되고 내부가 하향 방사형태로 형성되는 상부플레이트(41) 및 상부플레이트(41)의 저면에 결합되고 수개의 방사노즐(43)이 형성된 하부플레이트(42)로 구성되어 용융물을 사출하는 다이스(40);를 포함하고, 상기 주입관(10)과 공급관(20)을 케이싱하는 블록형태로 형성되고 내측에 설치된 히터(51)에 의해 내부를 가열하는 하나 이상의 열매블록(50);으로 구성되는 것을 특징으로 하는 개별제어가 가능한 압출용 다이스 라인에 관한 것이다.
摘要:
A layer multiplier ( 100 ) is disclosed. It comprises an inlet ( 102 ) for a flow of multilayered flowable material, a distribution manifold ( 104 ) into which the inlet debouches, a number >2 of separate splitting channels ( 106 ) extending from the distribution manifold, a recombination manifold ( 108 ) into which the splitting channels debouch, an outlet in one end of the recombination manifold, and the distribution manifold is arranged in an opposing relationship with the recombination manifold.
摘要:
A feedblock including a first packet creator that forms a first packet including a first plurality of polymeric layers, the first plurality of layers including at least four first individual polymeric layers; and a second packet creator that forms a second packet including a second plurality of polymeric layers, the second plurality of layers including at least four second individual polymeric layers, wherein the first and second packet creators are configured such that, for each packet creator, respective individual polymeric layers of the plurality of polymeric layers are formed at approximately the same time. The feedblock may include a packet combiner that receives and combines the first and second primary packets to form a multilayer stream. In some examples, at least one of the first and second primary packets may be spread in the cross-web direction prior to being combined with one another.
摘要:
Multi-layer cast structures particularly suitable for thermoforming applications comprise a coextruded polypropylene-containing microlayer sequence (a) of at least 16 microlayers, made of a number n of identical repeating units (a’), that in addition to a polypropylene microlayer (A) preferably comprise also a polyolefin microlayer (B) having a composition other than that of (A). In a preferred embodiment the microlayer sequence (a) is coextruded with an outer heat-sealable layer (b) and an outer abuse-resistant layer (c), preferably comprising a (co)polyamide or/and a (co)polyester.
摘要:
A feedblock (12) for a film extruder used to produce a uniform, multiple layer web (19). The feedblock has a generally annular configuration, for receipt of a core material (15) and a skin material (17). The feedblock has a varying radial dimension for passage of the skin material therethrough. After feeding the core material and the skin material through the feedblock and then a die (14), a flat web (19) having at least three layers, uniform across the web width, is obtained.
摘要:
The present invention provides a method of forming ductile multilayer silicone resin films. The method may include forming a silicone resin film comprising at least two polymer layers, at least one of them being a silicone resin layer. The thickness of the silicone resin layer(s) is less than a corresponding ductile transition thickness.
摘要:
A multi-microlayer thermoplastic film structure and methods of making the same. More specifically, this invention relates to a multi-microlayer film having a degradable polymer layer and a thermoplastic elastomer layer. Filler materials may be included in either the degradable polymer layer or the thermoplastic elastomer layer. The multi-microlayer films may be formed in a co-extrusion process.
摘要:
Die Erfindung betrifft einen Blaskopf, ein Verfahren zum Herstellen einer Blasfolie sowie eine Blasfolienanlage. Konkret betrifft die Erfindung den Einsatz von Plattenwendelverteilern (2) in Blasfolienanlagen. Es wird vorgeschlagen, die Schmelzeströme in einem Plattenwendelverteiler (2) zunächst zu bündeln (13, 17, 18) und dann gebündelt zu einer gemeinsamen Koextrusionsströmung (8) weiterzuleiten.