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    • 1. 发明申请
    • RECIPROCATING CLAMP APPARATUS AND METHOD OF UTILIZING THE SAME TO THERMOFORM PLASTIC CONTAINERS
    • 复合夹具装置及其使用方法将热塑性容器
    • WO1983001596A1
    • 1983-05-11
    • PCT/US1982001522
    • 1982-10-27
    • THE CONTINENTAL GROUP, INC.
    • THE CONTINENTAL GROUP, INC.BECK, Martin, HarryKRISHNAKUMAR, Suppayan, ManickamHARRY, Ieuan, Lance
    • B29C17/07
    • B29C51/04B29C51/18Y10T156/1007
    • Forming of containers (46) and like hollow articles from sheets or webs (22, 24) of thermoplastic material. Two webs or sheets (22, 24) are simultaneously acted upon by way of a forming apparatus (20) which includes a reciprocating clamp (40) first cooperable with one outer platen (32) and then the other (34) in sequence wherein, while a first web or sheet (22) is being formed within a plurality of mold cavities (44) to define a plurality of hollow articles such as containers (46), the other sheet or web (24) may be stripped from its respective mold set and a new sheet or a new portion of a sheet or web may be advanced into position for molding. The forming apparatus (20) may be constructed in a manner wherein the web portions which are to be formed may be billowed away from the mold cavities as an initial step in the stretching and orientation of the thermoplastic material. The thermoplastic material (22, 24) may be heated to the desired forming temperature using separate sets of electrodes (26, 28) so that only those portions of the thermoplastic material which are to be formed need be heated. Two sets of containers (46, 46) of different sizes may be formed from the webs or sheets (26, 28), and then internested to form double wall containers wherein the walls may be formed of different materials and wherein the outer material may be barrier material, or wherein the walls of the containers are spaced apart to form an insulated container.
    • 由热塑性材料的片或网(22,24)形成容器(46)和类似的中空制品。 两个腹板或片材(22,24)同时通过成形设备(20)起作用,所述成形设备(20)包括首先可与一个外台板(32)配合的往复夹具(40),然后顺序地另一个(34) 而在多个模腔(44)内形成第一网或片(22)以限定多个中空制品(例如容器(46)),可以从其各自的模具剥离另一个片或网(24) 并且可以将新的片材或片材或纤维网的新部分推进到成型的位置。 成形设备(20)可以以这样的方式构造,其中要形成的卷材部分可以作为热塑性材料的拉伸和取向的初始步骤从模具腔中凸出。 可以使用单独的电极组(26,28)将热塑性材料(22,24)加热到所需的成形温度,使得仅需要加热要形成的热塑性材料的那些部分。 两个不同尺寸的容器(46,46)可以由网或片(26,28)形成,然后被嵌入以形成双壁容器,其中壁可以由不同的材料形成,并且其中外部材料可以是 或者其中容器的壁间隔开以形成隔热容器。