摘要:
Die vorliegende Erfindung betrifft eine Vorrichtung und ein Verfahren zur Herstellung eines Partikelschaumstoffteils. Die Vorrichtung weist ein Formwerkzeug (2) mit einem Formteilinnenraum (3), einen Dampfgenerator (12) zum Erzeugen von in den Formteilinnenraum zuzuführenden Wasserdampf zum thermoplastischen Verschweißen von im Formteilinnenraum befindlichen Schaumstoffpartikeln zu einem Partikelschaumstoffteil, eine Zuführleitung (10, 11) zum Zuführen des Wasserdampfes zum Formwerkzeug, wobei in der Zuführleitung ein ansteuerbares Dampfventil (13, 14) vorgesehen ist, und ein Drucksensor (15, 16), der im Bereich zwischen dem Dampfventil und dem Formwerkzeug angeordnet ist, um den Druck des zugeführten Wasserdampfes zu messen. Mit einer Regeleinrichtung (23) wird der Druck nach einem vorbestimmten Profil über die Zeit geregelt, wobei das Profil eine Rampe aufweist, um innerhalb eines vorbestimmten Zeitintervalls den Druck allmählich von einem Anfangswert auf einen Endwert zu erhöhen.
摘要:
The present invention relates to an injection moulded product, an expanded foam product, a method of injection moulding a plastisol an expandable plastic embryo during which the foaming of the plastic embryo is suppressed throughout the moulding operation. The invention further relates to a mould and an injection moulding device.
摘要:
본 발명은 세척용구의 제조방법에 관한 것으로, 내부에 공간이 형성되어 있는 성형틀의 내부 공간 중 일부에 천연수세미를 충진 하는 단계; 배합용액을 형성한 후 형성된 배합용액에 곤약 분말을 첨가하고, 교반 혼합하여 원재료를 제조하는 단계; 상기 천연수세미가 충진되어 있는 성형틀 내부의 나머지 공간에 상기 제조된 원재료를 부어 넣어 상기 천연수세미와 원재료가 밀착된 형상을 형성하는 성형단계; 숙성단계; 증기가열단계 및 냉각 단계를 포함한다.
摘要:
A method is provided of molding recycled EPS and other suitable expanded bead materials using a powder adhesive and steam. The method allows for molding EPS parts with over 5 % and up to 100% recycled content. The method involves using an adhesive to fuse the regrind EPS particles under pressure from steam. The adhesive may be in powder form and preferably comprises small particles having a high surface area per unit weight and high static so the adhesive powder sticks to the surface of the regrind EPS particles during a dry blending step.
摘要:
Method for manufacturing biodegradable mouldings in particular tableware and packages with application of the method of evoking the water vapour pressure inside the form involves that loose bran, in particular the wheat one of granulation from 0.01 up to 2.80 mm in the amount of 95-100% of weight containing 14% of water structurally bound in the form of moisture, if the need be, is mixed in the dry form with additional substances in the volume of up to 5% of weight in total and the measured amount of dry material obtained in that way is placed in one of the parts of multipart form then the form is closed and the mixture is subject to the simultaneous operation of temperature and pressure of the scope 1-10 MPa. The form is heated up to temperature above 120°C then the form is closed and then depressurised forming the crack between the edges of the form not wider than 0.5 mm and then the form if the need be is closed again and the depressurisation cycles are repeated. After the last cycle the form is opened and the number of depressurisations is minimum 1 and the entire process of depressurization and closing the form takes few seconds and is completed according to the programme of the machinery digitally controlling the form movement depending on the expected parameters of the final product.
摘要:
An antimicrobial plastic composition suitable for any non-foamed application includes an antimicrobial compound uniformly dispersed in a plastic. The antimicrobial compound is selected from the group consisting of silanol quaternary ammonium compounds and salts thereof (SQACs) having a hydroxyl or hydrolyzable silane group capable of undergoing a condensation polymerization reaction to form a homo or copolymer, and/or forming a covalent bond with the plastic and/or other components in the plastic composition. Also described are methods for preparing an antimicrobial plastic composition including: (i) uniformly dispersing an antimicrobial compound in a plastic; (ii) forming a shaped article; and (iii) optionally exposing the shaped article obtained in (ii) to moisture or steam. The antimicrobial plastic composition can provide an article which is non-leaching, environmentally safe, non-toxic, with surface renewability, durable antimicrobial properties and also has improved physical and chemical properties such as tensile strength, static dissipation and chemical resistance.
摘要:
A process for curing a porous muffler preform (10,10a) defined by a plurality of glass fibers and a heat-curing thermoset or thermoplastic materials applied to the plurality of glass fibers is disclosed herein. The process includes the step of enclosing the muffler preform in a chamber (24, 24a). The process also includes the step of surrounding the muffler preform with steam. The process also includes the step of causing steam to enter the muffler preform from multiple directions.
摘要:
An extrusion and conditioning apparatus, with an extruder (2) which, in a conveying position, leads into a conveyor housing (10) connected in a sealed manner to a pneumatic supply line (40) and to a pneumatic conveyor line (16), from which extruded material can be removed pneumatically, especially by means of superheated steam, via the conveyor line (16), characterised in that the extruder (2) can be moved from the conveying position into a bypass position, in which the extruder (2) leads to the exterior of the conveyor housing (19), having a means (6) for sealing the supply and conveyor lines (40, 16) and the conveyor housing (10) vis-a-vis the surroundings when the extruder (2) is in the conveying and bypass positions.