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`Dynacraft V. Mattel
`IPR2018-00042
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`Dynacraft BSC, Inc.
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`Exhibit 1011
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`Library of Congress Cataloging—in-Publication Data
`
`Rosato, Donald V.
`
`Concise encyclopedia of plastics / Donald V. Rosato, Marlene G.
`Rosato, Dominick V. Rosato
`p.
`cm.
`
`Includes bibliographical references and index.
`ISBN 0—7923-8496-2 (acidHi'ree paper)
`1. Plastics Encyclopedias.
`I. Rosato, M. G.
`Dominick V.
`III. Title.
`TP1110.R66
`1999
`668.4'03—dc21
`
`II. Rosato,
`
`Copyright © 2000 by Kluwer Academic Publishers.
`
`All rights reserved. No part of this publication may be reproduced, stored in a
`retrieval system, or transmitted in any form or by any means, mechanical.
`photocopying, recording, or otherwise, without the prior written permission ofthe
`publisher, Kluwer Academic Publishers, 101 Philip Drive, Assinippi Park, Norwell,
`Massachusetts 02061.
`
`Printed on acidtfi’cc paper.
`
`Printed in the United States of America.
`
`

`

`
`
`364
`
`Concise Encyclopedia of Plastics
`
`evenly, and the ability to endure sustained production
`without constant maintenance. Using low-cost material to
`meet high performance requirements will compromise
`mold integrity. For example, for more than 90% of the
`molds, the cost of the cavity and core materials is less than
`5% ofthe total mold cost. See cost, product; mold cost.
`mold cavity, debossed. Depressed or indented let-
`tering or designs in the cavity that produce bossed impres-
`sions on the molded part. See decorating, fill—and-
`wipe.
`mold-cavity deposit A plastic build—up on a cavity’s
`surface that is due to plate out of the plastic and usually is
`attributed to the use of certain additives.
`
`mold-cavity draft. On most molded parts, features
`must be cut into the surface of the mold perpendicular to
`the molding parting line. To properly release the part from
`the tool, parts almost always include a taper. The amount
`of mold draft required will depend on factors such as type
`of plastic being processed, processing conditions, and sur-
`face finish. For example, a highly polished surface will re-
`quire less than an unpolished mold. Any surface texture
`will increase the draft at least 1° per side for every 0.001
`in. (0.003 cm) depth of texture. Special mold—cavity sur~
`face action can be used. Elastomeric material has a rubbery
`condition and may not require the drafi: for ejection. Also
`called drafi in the direction of the mold. See mold-parting
`line; mold release agent.
`mold cavity, duplicate-plate A removable plate that
`retains cavities and is used where a two-plate operation is
`necessary for loading inserts.
`mold cavity, etched A surface that is treated with an
`acid, leaving relief to form the desired design texture on
`the molded part. Sec chemical etching; photoetching
`tool; surface treatment; texturizing.
`mold-cavity ejector Various mechanical means that
`are used to eject or remove the molded part from the
`cavity.
`mold cavity, female The indented half of a mold that
`is designed to receive the male half. See mold cavity,
`male.
`
`mold-cavity fill and pack See injection molding,
`boost cut-off or two-stage control.
`mold-cavity filling See mold-filling monitoring.
`mold-cavity finish, SPI/SPE Mold Standard See
`surface finish.
`
`to
`Plastic melt begins
`frozen-layer
`mold cavity,
`"freeze” (solidify) as it fills an injection~molding mold
`cavity. The frozen layer can easily vary in thickness as the
`mold fills, producing different frictional shear forces. As a
`result, flow (filling) and solidification (thermoplastic cool-
`ing} should be evaluated together. See freeze-off.
`mold—cavity grit blasting Blowing steel grit or sand
`onto the cavity wall to produce a rough surface. This sur-
`face treatment may be required to permit air to leave the
`mold during molding or to provide a desired surface finish
`on the part. See cleaning, abrasion.
`mold-cavity hobbing Forming single or multiple
`
`mold cavities by forcing a hob into a relatively 5
`blank. Hobbing is a technique where a master n
`hardened steel is used to sink the shape of the car
`a heated mild steel, such as beryllium copper. Th
`larger than the finished plastic molded part becal
`bobbing, the metal shrinks during cooling. See t
`erosive cutting and sinking.
`mold—cavity honing Using a fine—grained wl
`or equivalent to obtain precise accuracy of the
`finish.
`
`mold cavity, injection The two halves of ti
`have a flat parting line. When the two halves me
`half is literally making contact by one flat surface
`another flat surface. Pressure on the injected mel
`cavity is through the plasticator’s pressure—ram at
`the melt. See clamping; mold cavity, comp:
`molding pressure required.
`mold—cavity land The length in the different g:
`figurations that influence melt flow.
`mold cavity, male The extended half of a m
`is designed to match the female half. Also called
`See mold—cavity filling.
`mold-cavity melt—flow analysis A compre
`understanding of the mold filling process. Demile
`mation is generated concerning the influence ot
`filling conditions on the distribution flow patten
`vectors, shear stresses, frozen skin, temperatures, at
`sures. From these data. conclusions regarding e.
`tolerances as well as part quality strength, appearar
`weld line can be drawn. The likelihood of warpi
`face, blemishes, and strength reductions due to hig
`stress can be anticipated. On this analysis, the best a:
`practical mold-filling conditions can be selected. S:
`model; inj ection-molding melt flow; injection
`ing process—control parameter; melt-flow 21
`processing fundamental; temperature transiti
`mold-cavity melt fountain flow The melt
`that enters the cavity (injection molding) by for
`fountain (balloon) stretching effect. The stretchin
`front-oriented outer surface covers the inside wal
`cavity. Melt that follows basically fills in the founta:
`The result is a nonuniform orientation in the cross-
`
`ofthe molded part; however, parts can still meet part
`mance requirements. The degree of ballooning or
`formation is controllable so that specific desired pr:
`can be obtained. Sec injection—molding melt flt
`mold-cavity packing See cushion; mold
`monitoring; packing factor.
`mold-cavity plating See mold-cavity coatit
`mold-cavity pressure The cavity pressure can
`corded via a transducer such as one being locate:
`cavity near the gate. It can plot a profile that record:
`out information such as filling, packing, and holdir
`sures. See injection molding mold—cavity pr:
`injection molding, programmed; molding pr:
`required.
`mold-cavity register An angle face on the Int
`
`